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प्रश्न
Draw a neat and labelled diagram of a screw gauge.
Name its main parts and state their functions.
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उत्तर
Diagram of screw gauge:
Main parts and their functions:
- Ratchet:It advances the screw by turning it until the object is gently held between the stud and spindle of screw.
- Sleeve:It marks the main scale and base line.
- Thimble:It marks the circular scale.
- Main scale:It helps to read the length correct up to 1 mm.
- Circular scale:It helps to read length correct up to 0.01 mm.
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संबंधित प्रश्न
Define the term 'Vernier constant'.
Name the part of the vernier callipers which is used to measure the following
Internal diameter of a mug
Name the instrument which can accurately measure the following
The internal diameter of the neck of a water bottle
What is the need for measuring length with vernier callipers?
Define the term least count as applied to a vernier callipers.
State the formula for calculating length if:
The reading of the main scale is known and the number of vernier scale divisions coinciding with the main scale is known.
State the correction if the positive error is 7 divisions when the least count is 0.01 cm.
A micrometre screw gauge has a positive zero error of 7 divisions, such that its main scale is marked in 1/2 mm and the circular scale has 100 divisions. The spindle of the screw advances by 1 division complete rotation.
If this screw gauge reading is 9 divisions on the main scale and 67 divisions on the circular scale for the diameter of a thin wire, calculate
- Pitch
- L.C.
- Observed diameter
- Corrected diameter
Name the measuring employed to measure the diameter of a pencil.
