43 2 APPENDIX 11. When would you use Prussian Blue? 12. In what respect does a shaper tool differ from a lathe tool ? 13. What determines the size of key for a shaft? 14. Name some (3) good bearing metals. 49. Association Test for Machinists Name the machine with which you associate the following words: For example dog lathe. 1. Rack— 2. Platen— 3. Turret— 4. Compound Rest— 5. Collet— 6. Ram— 7. Mandrel—• 8. Lead Screw— 9. Ways— 10. Hollow Mill— 11. Allundum— 12. “T” Bolt- 13. Rawhide— 14. Drift Pin— 15. Knee— 16. Parallel— 17. Magnetic Chuck— 18. Dresser— 19. Feed Rod— 20. Chasing dial— 50. Machinists’ Context Test Fill in the blank spaces with words making the best meaning. There are size drills generally thought of when prepar-