Advertisements
Advertisements
Question
Who invented vernier callipers?
Solution
Vernier callipers were invented by Pierre Vernier.
APPEARS IN
RELATED QUESTIONS
A screw gauge has a least count 0.001 cm and zero error +0.007 cm. Draw a neat diagram to represent it.
Which of the following measures a small length to high accuracy : metre rule , vernier callipers or screw gauge?
What is the need for measuring length with vernier callipers?
A micrometre screw gauge has a negative zero error of 8 divisions. While measuring the diameter of a wire the reading on the main scale is 3 divisions and the 24th circular scale division coincides with baseline.
If the number of divisions on the main scale are 20 to a centimetre and circular scale has 50 divisions, calculate
- pitch
- observed diameter.
- least count
- corrected diameter.
State the formula for calculating the least count of screw.
What do you understand by the following term as applied to screw gauge?
Positive zero error
In the following figure, the pitch of the screw is 1 mm. Calculate:
(i) the least count of screw gauge and
(ii) the reading represented in the figure.
What is the least count in the case of the following instrument?
vernier calipers
