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APPENDIX III ANSWERS TO REVIEW QUESTIONS - 14310_303
APPENDIX III ANSWERS TO REVIEW QUESTIONS - 14310_305

Aviation Boatswains Mate E - Aviation theories and other practices
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A39. Safety precautions that apply to extension cords: 1. Only use three-wire extension cords with three prong plugs. 2. Plug the tool into the extension cord before the extension cord is plugged in. 3. Replace damaged cords. A40. Portable pneumatic power tools include pneumatic chipping hammers, rotary and needle impact scalers, and portable pneumatic impact wrenches. A41. Rotary and needle impact scalers are used for removing rust, scale, and old paint from metallic and masonry surfaces. A42. Safety precautions that apply to pneumatic tools include: 1. Wear the appropriate protective devices. 2. Only authorized and trained personnel should use pneumatic tools. 3. Pneumatic tools should be laid down in such a way that no harm will be done if the switch is accidentally turn on. 4. Never point the air hose at another person. A43. The  title  block  is  located  in  the  lower  right  corner  on  all  blueprints  and drawings prepared to military standards. ANSWERS TO QUESTIONS FOR LESSON 2 A1.  The different types of measuring tools are: 1. Rules and tapes 2. Calipers 3. Micrometer calipers A2.  Steel  or  wooden  straightedge  rules  are  used  for  short  measurements.  Tape measures are used for longer measurements, up to 300 feet. Calipers are used in  conjunction  with  a  scale  to  determine  the  thickness  or  diameter  of  a surface, or the difference between surfaces. A3.  Handle rules and tapes carefully, and keep metal rules lightly oiled. Keep cal- ipers clean and lightly oiled. A4.  The different types of micrometers are: 1. Outside micrometers, including screw thread micrometers 2. Inside micrometers 3. Depth micrometers A5.  Outside micrometers are used to measure outside dimensions, such as the di- ameter   of   round   stock   or   the   thickness   of   flat   stock.   Screw   thread micrometers  are  used  to  determine  the  pitch  diameter  of  screws.  Inside micrometers are used to measure the inside diameter of a pipe or hole. Depth micrometers are used to measure the depth of a hole or recess. A6.  Keep micrometers clean and lightly oiled. Always keep micrometers in a case or box. A7.  All measuring tools will be marked in some manner to comply with the stan- dard inventory instructions found in OPNAVINST 4790.15. AIII-4







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