1. When taking a depth measurement, rotate the thimble of the depth micrometer in a __________ direction using the tip of one__________ . 2. Gage blocks are accurate to size only at __________ F. 3. The laboratory or master set of gage blocks is accurate to within __________ of an inch. 4. If the hole taper is not correct, the taper plug gage will __________ in the hole. 5. Optical flats are used with a __________ light. 6. Mechanical comparators may operate on the __________ and rack principle or use a system of __________ . 7. Revolve the work in a lathe slowly when measuring with a caliper. T F 8. A locking nut is not required on an inside micrometer since the spindle nut is a tight fit on the spindle thread. T F 9. The rounded-type small hole gage is used for measuring shallow slots and holes. T F 10. Gage blocks are manufactured only in 115- and 83-piece sets. T F 11. Gage blocks, made of hardened alloy steel, are not affected by temperature change. T F