1. The barrel on a standard micrometer has threads to an inch, which is equivalent to inch per revolution. 2. D The purpose of the ratchet on top of the thimble cap is 3. A Vernier slide caliper with a resolution of 0.00005 in. cannot accurately measure (to the nearest 0.0002 in) the diameter of a 1/4 inch hole because: 4. A slide caliper has 32 divisions per inch and a Vernier of 8 divisions per major division. For this instrument the smallest resolution and uncertainty are: 5. A "C" thread micrometer has the range in TPI of to