pneumatic dental drills
Two small high-speed pneumatic powered dental drills fitted with air bearings. Both are sectioned to reveal channels for compressed air and for air and water cooling and each mounted on its own board with a magnifying glass to give an enlarged vew of the air turbine which gives an operating speed of 500,000 rpm at 55 psi. Made 1970-80.
- Hand and Machine Tools
- Object Number:
case: 1.9685 x 13.77953 x 7.87402 in.; cm
- Science Museum. Circulation Dept.
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