A screw gauge has a least count 0.001 cm and zero error + 0.007 cm. Draw a neat diagram to represent it.

Q. A student measured the diameter of a small steel ball using a screw gauge of least count $0.001cm.$ The main scale reading is $5mm$ and zero of circular scale division coincides with $25$ divisions above the reference level. If screw gauge has a zero error of -$0.004cm,$ the correct diameter of the ball is

Q. A student measured the diameter of a small steel ball using a screw gauge of least count $0.001cm$. The main scale reading is $5mm$ and zero of circular scale division coincides with $25$ divisions above the reference level. If screw gauge has a zero error of $–0.004cm$, the correct diameter of the ball is

Q. The following diagram shows a screw gauge when it is closed. What is its zero error? It is given that the least count is 0.01 mm.

Q. Draw the diagrams showing zero errors of a Screw Gauge.
(a) No zero error
(b) Negative zero error
(c) Positive zero error

Q. The following diagram shows a screw gauge when it is closed. What is its zero error? It is given that the least count is 0.01 mm.