Advertisements
Advertisements
Question
State the formula for calculating the least count of screw.
Solution
Least count of screw
= `"Pitch"/"Number of circular scale divisions"`
E.g. If pitch of screw is 1 mm and there are 100 divisions on the circular scales, then
Least count = `(1 "mm")/100` = 0.01 mm
L.C. = 0.01 mm or 0.001 cm
APPEARS IN
RELATED QUESTIONS
What is meant by zero error of vernier callipers ? How is it determined? Draw neat diagrams to explain it. How is it taken in account to get the correct measurement?
What is the need for measuring length with vernier callipers?
Which part of vernier callipers is used to measure the internal diameter of a hollow cylinder?
Which part of vernier callipers is used to measure the internal length of a hollow cylinder?
What do you understand by the following term as applied to micrometre screw gauge?
Thimble scale
What do you understand by the following term as applied to micrometre screw gauge?
Baseline
State whether the following statement is true or false by writing T/F against it.
A metre scale can measure a length of 6.346 cm.
What is the least count in the case of the following instrument?
vernier calipers
