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RANDHAWA GLOBAL Testing and Measuring Instruments

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RANDHAWA GLOBAL Stainless Steel Vernier Caliper and Screw Gauge Micrometer, RG-22001 (Pack of 2)

Ships within 5 days

RANDHAWA GLOBAL Stainless Steel Vernier Caliper and Screw Gauge Micrometer, RG-22001 (Pack of 2)

By RANDHAWA GLOBAL

Pack of 2 piece

₹553 ~~₹999~~

You save ₹446!

44.64% OFF

RANDHAWA GLOBAL Stainless Steel Vernier Caliper and Screw Gauge Micrometer, RG-22001 (Pack of 2) is a fixed, graduated ruler with both metric and imperial units. The Vernier scale is a sliding scale with finer divisions that moves parallel to the main scale.
Measurement: To measure an object's length or width, the user places it between the caliper's jaws and gently closes them. The main scale reading is taken from the point on the main scale that aligns with the zero mark on the Vernier scale. Simultaneously, the Vernier scale is observed, and the mark on the Vernier scale that lines up with a mark on the main scale is noted. This alignment represents the fraction of the smallest division on the main scale, which is added to the main scale reading to determine the precise measurement.
Accuracy: Vernier Calipers offer high accuracy and are capable of measuring to within 0.02 millimeters or 0.001 inches.
Applications: They are widely used in mechanical engineering, manufacturing, and scientific research for measuring lengths, thicknesses, and diameters of objects.
Screw Gauge Micrometer:
Structure: A Screw Gauge Micrometer consists of a C-shaped frame with a spindle and anvil. The spindle is a finely threaded rod attached to the thimble, while the anvil is a flat surface opposite the spindle. The barrel contains the graduated scale.
Measurement: To measure the thickness or diameter of an object, the user places the object between the spindle and the anvil and gently turns the thimble. As the thimble rotates, the spindle moves toward the anvil, capturing the object's dimensions. The measurement is read from the barrel's scale and the thimble's scale. The barrel's scale provides a coarse measurement, while the thimble's scale offers finer divisions. The combination of these two readings gives the precise measurement.
Accuracy: Screw Gauge Micrometers are highly accurate instruments, often capable of measuring to within 0.01 millimeters or 0.0001 inches.
Applications: They are commonly used in engineering, machining, and metrology for measuring the thickness of materials, the diameter of small parts, and the depth of holes.
In summary, both Vernier Calipers and Screw Gauge Micrometers are essential precision measuring tools that offer accurate measurements of length, thickness, and diameter. While they have different structures and methods of measurement, they serve similar purposes in various applications, ensuring precise and reliable measurements in fields where precision is paramount.

RANDHAWA GLOBAL Convex Concave Lens and Mirror Set 50 mm Dia, RG-99034 (Set of 4 Pcs)

Ships within 3 days

RANDHAWA GLOBAL Convex Concave Lens and Mirror Set 50 mm Dia, RG-99034 (Set of 4 Pcs)

By RANDHAWA GLOBAL

Set of 2 piece

₹353 ~~₹649~~

You save ₹296!

45.61% OFF

RANDHAWA GLOBAL Convex Concave Lens and Mirror Set 50 mm Dia, RG-99034 (Set of 2 Pcs) is a combination of two optical elements: a convex lens and a concave mirror. These elements are positioned in such a way that they work together to manipulate the path of light rays, leading to various optical effects.
Key characteristics and functions of a convex-concave lens and mirror set:
Convex Lens: A convex lens is thicker at its center than at its edges and converges parallel rays of light that pass through it. It has a positive focal length and can form real or virtual images depending on the object's position relative to the lens.
Concave Mirror: A concave mirror is a curved mirror with an inward-curved reflective surface. It can either converge or diverge light rays, depending on its shape and the position of the object relative to the mirror. A concave mirror can form real or virtual images.
Combined Effects: When a convex lens and a concave mirror are used together in a lens-mirror system, the combined effects of both optical elements produce unique optical behaviors and applications.
Applications and characteristics of a convex-concave lens and mirror set:
Real and Virtual Images: Depending on the relative positions of the object, lens, and mirror, the system can produce both real and virtual images. Real images are formed when the object is placed between the lens and the mirror, while virtual images can be formed when the object is located on the same side as the incident light.
Magnification: The lens-mirror system can magnify or reduce the size of an object, depending on the specific arrangement. This is valuable in applications like microscopy, where magnification is essential.
Optical Path Reversal: Light rays passing through the system experience a reversal in their direction. This is useful in endoscopy and other optical instruments where the orientation of the image needs to be corrected.
Telephoto Lenses: Some telephoto camera lenses use a combination of convex lenses and concave mirrors to achieve a long focal length in a compact design. This allows for zooming and long-distance photography.
Telescopes and Binoculars: Lens-mirror systems are utilized in optical instruments like telescopes and binoculars to capture distant images and bring them into focus for observation.
Endoscopic Imaging: In medical endoscopes, a lens-mirror system is employed to transmit images from the inside of the body to an external viewing screen.
In summary, a convex-concave lens and mirror set is a combination of optical elements that can be configured to produce various optical effects, including the formation of real and virtual images, magnification, and optical path reversal. These systems are applied in a range of optical instruments and technologies, enabling advancements in fields such as photography, microscopy, and medical imaging.

RANDHAWA GLOBAL Chrome Finish Analytical Weight Box 1 mg to 100 g, RG-33409

Ships within 3 days

RANDHAWA GLOBAL Chrome Finish Analytical Weight Box, RG-33409

By RANDHAWA GLOBAL

₹1,415 - ₹2,359

You save ₹584!

29.21% OFF

The RANDHAWA GLOBAL Chrome Finish Analytical Weight Box RG-33409 is an essential tool used in analytical laboratories for precise measurement and calibration purposes. This weight box is designed to store and organize a set of analytical weights with a chrome finish for added durability and resistance to corrosion. The analytical weights housed within the weight box are carefully calibrated to exacting standards, ensuring accuracy and reliability in measurements. They are commonly used in analytical balances and scales for precise weighing of substances in chemical and pharmaceutical laboratories, as well as in quality control and research facilities. The chrome finish of the weight box provides protection against rust and corrosion, maintaining the integrity of the analytical weights stored within. Additionally, the box is designed with compartments to securely hold each weight, preventing damage or loss during storage and transport. The RANDHAWA GLOBAL Chrome Finish Analytical Weight Box RG-33409 is an indispensable tool for scientists, researchers, and laboratory technicians requiring accurate and reliable measurements in analytical chemistry and other scientific disciplines. Its sturdy construction, corrosion-resistant finish, and organized storage design make it an essential component of any analytical laboratory setup.

Type of Product : Analytical Weight Box

Material : Brass

Model No : RG-33409

Color : Silver

Accuracy : 10 mg

Packaging Type : Box

Finishing : Chrome

Application Area : School and College Labs

RANDHAWA GLOBAL Concave and Convex Optical Glass Mirror 50 mm Diameter, RG-55609 (Set of 2 Pcs)

Ships within 3 days

RANDHAWA GLOBAL Concave and Convex Optical Glass Mirror (Set of 2 Pcs)

By RANDHAWA GLOBAL

Set of 2 piece

₹353 - ₹353

You save ₹297!

45.69% OFF

The RANDHAWA GLOBAL Concave and Convex Optical Glass Mirror Set consists of two pieces: one concave mirror and one convex mirror. These optical glass mirrors are essential tools used in physics experiments and demonstrations to study the properties of light, reflection, and image formation. The concave mirror is curved inward, while the convex mirror is curved outward. Each mirror shape exhibits distinct optical properties that can be explored through various experiments. For example, the concave mirror can be used to focus light rays to produce real or virtual images, while the convex mirror can be used to create diverging or reduced images. The set of concave and convex mirrors provides students and researchers with hands-on opportunities to investigate concepts such as focal length, magnification, and mirror symmetry. By observing and analyzing the behavior of light rays reflected from these mirrors, learners can deepen their understanding of optics principles. The RANDHAWA GLOBAL Concave and Convex Optical Glass Mirror Set is suitable for use in educational institutions, physics laboratories, and science classrooms to supplement lessons on optics and light. Its durable glass construction and precise mirror shapes make it a valuable resource for exploring and understanding the behavior of light in optical systems.

Type of Product : Concave and Convex Optical Glass Mirror

Color : Multicolor

Usage For : Scientific Experiments and Projects

Material : Glass

Package Contains : 2 Pcs

Application Area : Science Labs

Includes : Concave and Convex Mirror Set

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randhawa global optical measuring

RANDHAWA GLOBAL Voltmeter, Ammeter and Galvanometer, RG-C3MTR (Pack of 3 Pcs)

Ships within 3 days

RANDHAWA GLOBAL Voltmeter, Ammeter and Galvanometer, RG-C3MTR (Pack of 3 Pcs)

By RANDHAWA GLOBAL

Pack of 3 piece

₹1,887 ~~₹2,199~~

You save ₹312!

14.19% OFF

RANDHAWA GLOBAL Voltmeter, Ammeter and Galvanometer, RG-C3MTR (Pack of 3 Pcs) is a device used to measure the voltage, or electric potential difference, between two points in an electrical circuit. It is connected in parallel with the component or part of the circuit whose voltage is to be measured. Voltmeters are designed to have a very high resistance (ideally infinite) so that they draw minimal current from the circuit, preventing any significant disruption to the circuit's operation. Voltmeters are calibrated in units of volts (V) and can measure both AC (alternating current) and DC (direct current) voltages.
Ammeter:
An ammeter is an instrument used to measure the electric current flowing through a circuit. It is connected in series within the circuit, so all the current passes through the ammeter. Ammeters are designed with a low resistance to minimize the voltage drop across the instrument. When measuring current, it's crucial to select an ammeter with an appropriate current range, as exceeding this range can damage the instrument and create a safety hazard. Ammeters are calibrated in units of amperes (A) or milliamperes (mA) for smaller current measurements.
Galvanometer:
A galvanometer is a sensitive instrument used to detect and measure small electric currents. It serves as the basis for both voltmeters and ammeters. A galvanometer typically consists of a coil of wire suspended within the field of a permanent magnet. When current flows through the coil, it experiences a torque that causes it to rotate. The angle of rotation is proportional to the current passing through it. Galvanometers can be calibrated to measure either voltage (by connecting a high resistance in parallel with the coil to convert it into a voltmeter) or current (by connecting a low resistance in series with the coil to convert it into an ammeter). The sensitivity of a galvanometer is determined by its design and can be adjusted by varying the strength of the magnetic field or the coil's resistance.
In summary, voltmeters are used to measure voltage, ammeters measure current, and galvanometers serve as the basis for both voltmeters and ammeters. These instruments are vital for understanding and monitoring electrical circuits, ensuring their proper operation, and troubleshooting electrical systems.

RANDHAWA GLOBAL Stainless Steel Vernier Caliper 0-12.5 cm Range, RG-88041 (Pack of 2)

Ships within 3 days

RANDHAWA GLOBAL Stainless Steel Vernier Caliper 0-12.5 cm Range, RG-88041

By RANDHAWA GLOBAL

Pack of 2 piece

₹1,014 - ₹4,955

You save ₹485!

32.35% OFF

The RANDHAWA GLOBAL Stainless Steel Vernier Caliper RG-88041 features a range of 0 to 12.5 cm, making it a versatile precision measuring instrument for various applications. Crafted from durable stainless steel, this vernier caliper offers accuracy, durability, and resistance to corrosion, ensuring reliable performance in diverse settings. With its precise measurement capabilities, the vernier caliper enables users to accurately measure lengths, diameters, and thicknesses of objects with high precision. The stainless steel construction provides durability and longevity, making it suitable for both professional and educational use. Equipped with a Vernier scale, the caliper allows for precise readings to be taken, even for measurements as small as 0.1 mm. The scale is easy to read and provides accurate measurements, enhancing the efficiency and accuracy of tasks requiring precise measurements. The RANDHAWA GLOBAL Stainless Steel Vernier Caliper RG-88041 is commonly used in engineering, manufacturing, laboratory, and educational settings for tasks such as quality control, machining, and scientific experiments. Its sturdy construction, precise measurement capabilities, and user-friendly design make it an essential tool for professionals, students, and hobbyists requiring accurate measurements in their work or projects.

Model No : RG-88041

Type of Product : Vernier Caliper

Measurement Range (mm) : 0-125 mm

Material : Stainless Steel

Accuracy : 1 mm

Color : Silver

Finishing : Matt

Application Area : Science Labs

RANDHAWA GLOBAL Stainless Steel Vernier Caliper 0-12.5 cm Range and 0.1 cm Accuracy, RG-88041

Ships within 3 days

RANDHAWA GLOBAL Stainless Steel Vernier Caliper 0-12.5 cm Range and 0.1 cm Accuracy, RG-88041

By RANDHAWA GLOBAL

₹282 ~~₹1,499~~

You save ₹1,217!

81.19% OFF

RANDHAWA GLOBAL Stainless Steel Vernier Caliper 0-12.5 cm Range and 0.1 cm Accuracy, RG-88041 is a precision measuring tool commonly used in various fields, including engineering, manufacturing, and scientific research, to accurately measure the dimensions of objects with high precision. It is named after its inventor, Pierre Vernier, and offers a versatile and efficient means of taking both inside and outside measurements, as well as depth measurements.
The main components of a Vernier caliper include a main scale and a Vernier scale. The main scale is a graduated, fixed ruler with markings in millimeters or inches, which serves as the primary reference for measurements. The Vernier scale is a sliding scale that moves parallel to the main scale and has finer divisions. This Vernier scale allows for the measurement of smaller increments than what the main scale alone can provide.
To measure an object's length or width, the user places the object between the caliper's jaws and gently closes them. The main scale reading is taken from the point on the main scale that aligns with the zero mark on the Vernier scale. Simultaneously, the Vernier scale is observed, and the mark on the Vernier scale that lines up with a mark on the main scale is noted. This alignment represents the fraction of the smallest division on the main scale, which is added to the main scale reading to determine the precise measurement.
Vernier calipers come in various designs and sizes, with both manual and digital versions available. Digital Vernier calipers provide direct digital readouts, eliminating the need for manual interpretation of scales and reducing the chance of errors. They are highly accurate, often capable of measuring to within 0.02 millimeters or 0.001 inches.
In summary, a Vernier caliper is an essential precision measuring tool that allows for accurate measurements of length, width, and depth of objects with great precision. Its combination of a main scale and a Vernier scale provides a versatile and reliable means of obtaining precise measurements in various applications.

RANDHAWA GLOBAL Stainless Steel Vernier Caliper 0-150 mm, PR26

Ships within 2 days

RANDHAWA GLOBAL Stainless Steel Vernier Caliper 0-150 mm, PR26

By RANDHAWA GLOBAL

₹860 ~~₹1,399~~

You save ₹539!

38.53% OFF

RANDHAWA GLOBAL Stainless Steel Vernier Caliper 0-150 mm, PR26 is a precision measuring tool commonly used in various fields, including engineering, manufacturing, and scientific research, to accurately measure the dimensions of objects with high precision. It is named after its inventor, Pierre Vernier, and offers a versatile and efficient means of taking both inside and outside measurements, as well as depth measurements.
The main components of a Vernier caliper include a main scale and a Vernier scale. The main scale is a graduated, fixed ruler with markings in millimeters or inches, which serves as the primary reference for measurements. The Vernier scale is a sliding scale that moves parallel to the main scale and has finer divisions. This Vernier scale allows for the measurement of smaller increments than what the main scale alone can provide.
To measure an object's length or width, the user places the object between the caliper's jaws and gently closes them. The main scale reading is taken from the point on the main scale that aligns with the zero mark on the Vernier scale. Simultaneously, the Vernier scale is observed, and the mark on the Vernier scale that lines up with a mark on the main scale is noted. This alignment represents the fraction of the smallest division on the main scale, which is added to the main scale reading to determine the precise measurement.
Vernier calipers come in various designs and sizes, with both manual and digital versions available. Digital Vernier calipers provide direct digital readouts, eliminating the need for manual interpretation of scales and reducing the chance of errors. They are highly accurate, often capable of measuring to within 0.02 millimeters or 0.001 inches.
In summary, a Vernier caliper is an essential precision measuring tool that allows for accurate measurements of length, width, and depth of objects with great precision. Its combination of a main scale and a Vernier scale provides a versatile and reliable means of obtaining precise measurements in various applications.

RANDHAWA GLOBAL Optical Glass Kit for Physics Lab Experiments, RG-55608

Ships within 3 days

RANDHAWA GLOBAL Optical Glass Kit for Physics Lab Experiments, RG-55608

By RANDHAWA GLOBAL

₹483 ~~₹699~~

You save ₹216!

30.9% OFF

RANDHAWA GLOBAL Optical Glass Kit for Physics Lab Experiments, RG-55608 is a collection of specialized glass components and elements used in optical experiments, educational demonstrations, and the construction of optical devices. These kits provide a range of optical components, each with specific properties and functions, allowing users to explore and understand various principles of optics and light manipulation.
Key components typically found in an optical glass kit include:
Lenses: Various types of lenses are included, such as converging lenses (convex), diverging lenses (concave), and cylindrical lenses. Lenses are used to focus, diverge, or shape light, and they play a fundamental role in optics experiments.
Prisms: Prisms are optical elements with flat, polished surfaces that can refract, disperse, or reflect light. Common prisms include equilateral prisms for dispersion and right-angle prisms for reflection.
Mirrors: Optical mirrors, often included in the form of plane (flat) mirrors and concave or convex mirrors, are used to reflect and direct light. Mirrors are crucial in optical setups for changing the path of light.
Diffraction Gratings: These optical elements contain a large number of closely spaced parallel slits or lines, which can disperse light into its component colors. Diffraction gratings are essential for studying the spectra of light sources.
Polarizers: Polarizing elements like linear polarizers or polarizing sheets are used to control the polarization state of light. They are essential in experiments related to polarization, such as studying polarized light behavior.
Prism Table or Optical Bench: A platform with adjustable mounts and positioning accessories is included to set up optical experiments systematically and precisely.
Light Sources: Some optical glass kits come with light sources, such as lasers or LED sources, to provide a controlled and consistent light beam for experiments.
Filters: Optical filters, including color filters or neutral density filters, are used to selectively transmit or block certain wavelengths of light, enabling investigations into spectral properties.
Lens Holders and Mounts: These components provide a means to securely hold and position lenses, mirrors, and prisms at specific angles and distances.
Optical Apertures and Stops: These devices control the size and shape of the light beam, useful in experiments involving ray optics and image formation.
Optical glass kits are valuable tools in scientific education, research, and experimentation. They allow students, researchers, and optical enthusiasts to explore a wide range of optical phenomena, from the behavior of light as it interacts with different materials to the construction of simple optical instruments. These kits are commonly used in physics and optics laboratories, as well as in educational settings to demonstrate fundamental principles of optics and light.

RANDHAWA GLOBAL Optical Glass Concave and Convex Lens 75 mm with Stand, RG-55098 (Pack of 3 Pcs)

Ships within 3 days

RANDHAWA GLOBAL Optical Glass Concave and Convex Lens 75 mm with Stand, RG-55098 (Pack of 3 Pcs)

By RANDHAWA GLOBAL

Pack of 3 piece

₹542

RANDHAWA GLOBAL Optical Glass Concave and Convex Lens 75 mm with Stand, RG-55098 (Pack of 3 Pcs) are two fundamental types of optical lenses used in various optical systems, including cameras, eyeglasses, microscopes, and telescopes. They have distinct shapes and optical properties that allow them to manipulate the path of light in different ways.
Convex Lens:
A convex lens, often referred to as a converging lens, is thicker in the middle than at the edges. It causes parallel rays of light to converge or come together at a focal point on the opposite side of the lens. Convex lenses have several essential characteristics:
Focal Point and Focal Length: When parallel rays of light pass through a convex lens, they refract and converge at a single point on the lens's optical axis. This point is called the focal point. The distance between the center of the lens and the focal point is known as the focal length (f).
Real and Virtual Images: Convex lenses can produce both real and virtual images. Real images are formed on the opposite side of the lens from the object, and they can be projected onto a screen. Virtual images are formed on the same side as the object, and they cannot be projected onto a screen.
Magnification: Convex lenses can magnify objects, making them appear larger. The degree of magnification depends on the distance between the object and the lens and the focal length of the lens.
Convex lenses are commonly used in applications where magnification and focusing are required, such as in camera lenses, eyeglasses for farsightedness, and microscopes.
Concave Lens:
A concave lens, also known as a diverging lens, is thinner in the middle than at the edges. It causes parallel rays of light to diverge or spread out. Concave lenses have the following characteristics:
Focal Point and Focal Length: When parallel rays of light pass through a concave lens, they appear to diverge from a point on the same side as the object. This point is called the virtual focal point, and the focal length (f) is the distance between the center of the lens and this virtual focal point.
Virtual Images: Concave lenses always produce virtual images that are formed on the same side as the object. These virtual images appear smaller and farther away than the actual object.
Divergence: Concave lenses are used to correct nearsightedness (myopia) in eyeglasses. They diverge incoming light before it reaches the eye's lens, allowing the eye to focus the image correctly on the retina.
In summary, convex lenses converge light rays and are used for magnification and focusing, while concave lenses diverge light rays and are used for correcting vision problems and creating virtual images. Understanding the properties of these lenses is crucial in optics and lens design for various optical devices and systems.

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Product Name	Expected Price	Dispatch Time	Discount
Insize 150mm Digital Vernier Caliper, 1112-150	₹2,241	60 days	6.63% OFF
Freemans 12 Inch (304.80 mm) 0-10 km Plastic Measuring Wheel MW01	₹2,359	24 hrs	38.41% OFF
HTC DC-3005-II 0-30 V, 0-5 A DC Regulated Power Supply	₹10,383	24 hrs	11.83% OFF
Ionix 30 Kg Weight Machine	₹1,651	24 hrs	--
Bosch GLM 40 Laser Distance Meter 40 m	₹4,601	30 days	1.78% OFF

RANDHAWA GLOBAL Testing and Measuring Instruments

Top Selling RANDHAWA GLOBAL Testing and Measuring Instruments Products Price List for March 2026