11. These machines employ two wide, rotating cutting heads , one above the stock and one below it. 12. His Neumann mastering room was the first in the city to feature a stereo cutting head . 13. In the Westrex system, each channel drives the cutting head at a 45-degree angle to the vertical. 14. It comes with a rotating cutting head . 15. Signals fed to the cutting head were pre-emphasized in the treble region to help override noise in playback. 16. Perhaps a bigger factor is, at these temperatures the lubricating grease and seals on the cutting head break down. 17. He invented the moving-coil disc cutting head , which not only got around the patent but offered greatly improved sound quality. 18. Outside the museum is the cutting head of tunnel boring machine, TRUDE ( ), used in cutting the tunnels under the Elbe. 19. The moms even made their uniforms _ sort of colored ponchos, actually _ by cutting head holes in 3-by-6 pieces of fabric. 20. In machining the rake angle is that which measures the cutting angle of the cutting head to the object being worked on.