Check the spec. ...
Michael Gilligan | 12/01/2019 13:12:38 |
![]() 23121 forum posts 1360 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 1 | 12/01/2019 14:34:54 |
1050 forum posts 56 photos | I make the equivalent cost now to >£3,500. Thank goodness for China! |
Tim Stevens | 12/01/2019 16:01:45 |
![]() 1779 forum posts 1 photos | And you still need a small boy running round inside a drum to provide the motive power ... Tim |
SteveW | 12/01/2019 16:20:01 |
![]() 140 forum posts 11 photos | Best thing is the drive is communicated by a sleeve and a feather. Not something I've tried yet... SteveW |
Neil Wyatt | 12/01/2019 16:39:13 |
![]() 19226 forum posts 749 photos 86 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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