Define the pitch and the least count of a micrometer screw gauge.

Name the instrument you would use to measure the diameter of a pin.

Name the instrument you would use to measure the external diameter of a ball pen refill.

Name the instrument you would use to measure external / internal diameter of a calorimeter.

(Choose from the following: Screw gauge/ Vernier caliper)

Name the instrument you would use to measure the thickness of a thin glass plate.

(Choose from the following: Screw gauge/ Metre scale)

Name the instrument you would use to measure the thickness of a paper.

(Choose from: vernier scale/ metre scale/ screw gauge)

Name the instrument you would use to measure the diameter of a sphere.

Name the instrument you would use to measure the internal diameter of a test tube.

(Choose from: vernier calliper, metre scale/screw gauge)

Name the instrument you would use to measure the width of a table. 

(Choose from: vernier calipers, screw gauge, ruler)