Gallery, Projects and General > How do I??

Involute Gears - Identification of Pressure Angle.

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tom osselton:
My father use to use a slide rule then the calculator came along and now the slide rule = shite and downhill!  :D

awemawson:
Still got my sliderule. It's an Aristo Scholar and I had to use it throughout my training despite calculators having just come on the scene. (Glowing leds or green discharge tube!) But then I also have an abacus hanging on a nail in my office. I joke that it's the back up if the computer goes pop  :lol:

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