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Vintage Test Gear and Workshop Equipment For discussions about vintage test gear and workshop equipment such as coil winders. |
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Thread Tools |
8th Sep 2016, 10:06 pm | #1 |
Dekatron
Join Date: Nov 2008
Location: Whittlesey, near Peterborough, Cambridgeshire, UK.
Posts: 3,758
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Mystery object.
Found this in a garage clearance today. Can anyone tell me what the heck it is, please? Seems to be some sort of rev counter?
Barry Last edited by Audio1950; 8th Sep 2016 at 10:15 pm. |
8th Sep 2016, 10:09 pm | #2 |
Heptode
Join Date: Apr 2016
Location: Cheltenham, Gloucestershire, UK.
Posts: 872
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Re: Mystery object.
A pic would be enlightening Audio !
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8th Sep 2016, 10:09 pm | #3 |
Moderator
Join Date: Dec 2010
Location: Exeter, Devon and Poole, Dorset UK.
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Re: Mystery object.
It's an invisible rev counter
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8th Sep 2016, 10:17 pm | #4 |
Dekatron
Join Date: Nov 2008
Location: Whittlesey, near Peterborough, Cambridgeshire, UK.
Posts: 3,758
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Re: Mystery object.
Yeah, well, it's been a long day!
Should be there now. |
8th Sep 2016, 10:40 pm | #5 |
Heptode
Join Date: Jul 2014
Location: Boston, Lincolnshire, UK.
Posts: 992
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Re: Mystery object.
Tool to set up lathe cutting speed ? Presumably measures the linear speed of the material passing the cutting tool.
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8th Sep 2016, 10:46 pm | #6 |
Moderator
Join Date: Jan 2003
Location: Ipswich, Suffolk, IP4, UK.
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Re: Mystery object.
It's for the measuring cutting speed of a work piece held in a lathe. This will depend on the diameter/circumference of the work piece and the speed at which the lathe's spindle is rotating.
It's basically a high ratio step down gear box. The input is driven from the periphery of the work piece and the output shaft drives the pointers. Pressing a button engages the drive and three seconds later the drive is automatically disengaged. The cutting speed can then be read from the pointers, the scale being calibrated accordingly. In the third picture a similar device seems to be being used to measure the speed of a band saw. I've seen rev counters working on the same principle, but without the built in timer. You had to use a stopwatch
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Graham. Forum Moderator Reach for your meter before you reach for your soldering iron. |
8th Sep 2016, 11:32 pm | #7 |
Dekatron
Join Date: Nov 2008
Location: Whittlesey, near Peterborough, Cambridgeshire, UK.
Posts: 3,758
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Re: Mystery object.
Thanks! We live and learn something new every day.
Now, what am I gonna do with it?.......... Barry |
9th Sep 2016, 9:22 am | #8 |
Octode
Join Date: Jul 2009
Location: Carmel, Llannerchymedd, Anglesey, UK.
Posts: 1,498
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Re: Mystery object.
Buy a lathe?
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