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Forum sponsored by Allendale Nov 29

High Speed Sensitive Drilling Machine : 1909

Check the spec. ...

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Michael Gilligan12/01/2019 13:12:38
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12310 forum posts
538 photos

I found this on the Smithsonian website: **LINK**

http://www.sil.si.edu/DigitalCollections/trade-literature/scientific-instruments/pdf/sil14-51690.pdf

It's interesting to compare the specification, the engineering, and the price, with what we see today.

MichaelG.

Clive Brown 112/01/2019 14:34:54
188 forum posts
5 photos

I make the equivalent cost now to >£3,500. Thank goodness for China!

Tim Stevens12/01/2019 16:01:45
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962 forum posts

And you still need a small boy running round inside a drum to provide the motive power ...

Tim

SteveW12/01/2019 16:20:01
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109 forum posts
10 photos

Best thing is the drive is communicated by a sleeve and a feather. Not something I've tried yet...

SteveW

Neil Wyatt12/01/2019 16:39:13
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Moderator
15241 forum posts
648 photos
72 articles

While the little chain appears a good idea at first, it must greatly reduce the utility of the handy little triangle.

Neil

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