Test and analysis: The measuring principle of the new vernier caliper is the same as that of the traditional vernier caliper. The 20 squares of the new vernier caliper are only 39mm, which is shorter than the 40 squares of the main ruler1mm. Its measuring accuracy is 0.05mm, and the thickness of the object measured by it is10 mm+0.05 mm× 7 =10.35.
The fixed scale of the screw micrometer is 1mm, and the movable scale is19.5× 0.01mm = 0.195mm, so the final reading is1mm+0.195mm.