Comments by "manxman" (@manxman8008) on "Machine Thinking" channel.

  1. British Yard not English
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  2. bolt together, screw into. That covers machine and wood screws.
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  3. 12.20 doesn't seem to work like you explained.
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  4. Oops you left out the population spike
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  5. but how did he make an accurate worm gear?
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  6. great stuff -- note that Britain had an empire that needed standard screws too
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  7. US and one other country uses imperial. The 'US System' is the British Imperial System: units of measure
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  8. Likely the ends of the pumps are one-way valves, vanes perhaps
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