Precision Measuring Set, 1 Each

The Precision Measuring Set by United Scientific contains four measuring instruments in a sturdy plastic storage case: a 0 to 25 mm micrometer caliper with 0.01 mm resolution, a 150 mm vernier caliper reading to 0.02 mm, a 90° knife-edge square and a 15 cm steel ruler. Instructions are included. Physics and technology teachers use it to demonstrate precision length measurement and compare instrument resolution.