Question

Mini Exercise 1. What is the least count of a screw gauge? 2. What is the pitch of your laboratory screw gauge? 3. What is the range of your laboratory screw gauge? 4. Which one of the two instruments is more precise and why? (a) Vernier Callipers. (b) Screw Gauge​

Answer 1

Answer:

1. 0.01 mm

2. Basically it is a screw with an accurately constant pitch (the amount by which the thimble moves forward or backward for one complete revolution). The micrometers in our laboratory have a pitch of 0.50 mm (two full turns are required to close the jaws by 1.00 mm).

3. 0-25mm

4. As compare to Vernier calipers, screw gauge is more precise because the least count of Vernier calipers is 0.1 mm and for screw gauge it is 0.01 mm. So, a screw gauge can measure more precisely than a Vernier caliper

Answer 2

1) 0.001 cm

2) Basically it is a screw with an accurately constant pitch (the amount by which the thimble moves forward or backward for one complete revolution). The micrometers in our laboratory have a pitch of 0.50 mm (two full turns are required to close the jaws by 1.00 mm).

3) 25 mm range

4) -