. Trade tests; the scientific measurement of trade proficiency . PICTURE 8 9. Q. What do you call the tool between the centers?A. Q. What is the attachment on that lathe used for? A. (i) Backing off. (2) Relieving. (3) Clearance. (One sufficient) THE PICTURE TRADE TEST METHOD 223 3 4 5 6 7 5 10 15 20 25 PICTURE 9 11. Q. What is the reading on that vernier? A. (i) to (2) 205 to 270. (One sufficient) 4 \ r -// .7SO 1-. PICTURE 10 12. Q. What should be the dimension at A?A. 3. 13. Q. Why do they have two dimensions at B?A. (i) Maximum and minimum. (Note: Accept any equ
. Trade tests; the scientific measurement of trade proficiency . PICTURE 8 9. Q. What do you call the tool between the centers?A. Q. What is the attachment on that lathe used for? A. (i) Backing off. (2) Relieving. (3) Clearance. (One sufficient) THE PICTURE TRADE TEST METHOD 223 3 4 5 6 7 5 10 15 20 25 PICTURE 9 11. Q. What is the reading on that vernier? A. (i) to (2) 205 to 270. (One sufficient) 4 \ r -// .7SO 1-. PICTURE 10 12. Q. What should be the dimension at A?A. 3. 13. Q. Why do they have two dimensions at B?A. (i) Maximum and minimum. (Note: Accept any equivalent answer.) (2) Tolerance. (3) Allowance of (4) For limit gages. (One sufficient) 224 TRADE TESTS
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