Physics Practicals Class 11

# Use of Screw Gauge

• Teach science experiments in a gamified way
• Boost conceptual clarity and knowledge retention
• Aligned with National Education Policy 2020
• Helpful in getting NAAC accreditation
• CBSE, ICSE, and state boards aligned curricula
• Engaging simulations with easy-to-teach instructions

• In this simulation, you will see the screw gauge and all the given bodies of different dimensions explained, so you can understand how they relate to real-world measurements.
• Using the linear and circular scale provided on the vernier calipers, you can measure dimensions accurately, ensuring precise results.
• By observing the divisions on the linear and circular scales, you will calculate the total reading of dimensions of the given bodies and derive corresponding quantities with ease.
• Throughout the simulation, you will gain a comprehensive understanding of the principle of screw gauge and its practical applications, empowering you to utilize this knowledge effectively.

• At the end of this simulation, you will understand the parts and functions of a screw gauge, its principle of operation, and how to determine its least count and errors, enabling you to confidently measure various parameters such as the diameter of a metallic wire, the thickness of a metallic sheet, and even the thickness and volume of an irregular lamina.

### Simulation Details

Duration – 30 Minutes
Easily Accessible
Languages – Odia & English
Platforms – Android & Windows

Description

Screw gauge
Screw Gauge is a mechanical tool that facilitates measuring the diameter or radius or thickness of a thin wire or thickness of a thin metal sheet with utmost accuracy. This tool consists mainly of a U-shaped frame and a spindle attached to the thimble. There are two scales known as Pitch Scale which is the main scale and is engraved on the barrel with vertical lines. Another one is the Circular Scale which is engraved horizontally on the thimble.

Principle of the screw gauge
The screw gauge works on the principle of movement. When the screw is rotated, there is a linear motion on the main scale of the screw gauge. This measurement is used to calculate small lengths.

The distance moved by the spindle per rotation is known as pitch. It is measured by rotating the head scale per the pitch scale to complete one rotation.

Least count (L.C.) of screw gauge
The least count of a screw gauge is the distance moved by the tip of the screw when moved through one division of the scale.

### Requirements for this Science Experiment

• Pencil
• Graph paper
• Irregular lamina
• Metallic sheet
• Micrometer screw gauge
• Metallic wire
• Scale

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