Question

explaining the functions of screw gauge and vernier caliper to measure the radius of the sphere and thickness of wire​

Answer 1

The vernier calipers found in the laboratory incorporates a main scale and a sliding vernier scale which allows readings to the nearest 0.02 mm. This instrument may be used to measure outer dimensions of objects (using the main jaws), inside dimensions (using the smaller jaws at the top), and depths (using the stem).

Answer 2

A screw gauge is a tool for measuring the diameter and thickness of components.

Explanation:

• It has a calibrated screw on it that is utilized for precise component measuring.
• It consists of a U-shaped metal frame with a hollow cylinder attached to one end of the frame and a millimeter scale fastened to the cylinder parallel to the screw axis.
• Pitch scale is the name for this scale.
• A screw gauge, sometimes known as a micrometer screw gauge, is a tool that is used to precisely measure the thickness or diameter of a component.
• It's used to take measurements of incredibly tiny areas.
• It is part of a caliper family, however it can measure considerably smaller dimensions than Vernier calipers.
• A screw gauge operates on the screw concept.
• By monitoring the rotation of the screw, this screw principle aids in the conversion of short distances into greater ones.
• It magnifies the smallest dimensions, resulting in bigger ones.
• There is a linear movement of the main scale as we revolve the screw.
• The diameter or thickness of components may then be calculated using this linear movement.
• In every screw gauge, there are two parameters that are employed. A screw gauge's pitch and least count are the two parameters.
• Pitch is the ratio of a screw's distance travelled to the number of revolutions required.
• On a circular scale, the least count is the ratio of pitch to total divisions.
• The screw gauge has a minimum count of 0.001cm.