July 19, 2006, 18:59
Charles R. SidesWhat it is (again)
watchmaker got this in a box of tools he bought. Wants to use it, but WHATISIT
July 19, 2006, 20:06
Wayne C. AndersonBelieve that its a rev counter.. I have one around here that is similar.
Its used to accurately determine the revolutions of shafting, wheels, and spindles in either direction. There should be a rubber points which would be pressed against the shaft or spindle.
July 19, 2006, 20:32
Tim HillsThat's right. I think they were used on lathes to help determine revolutions.. as Wayne said.
Old time machinists used them. I don't know if they are used today, except maybe in non-CNC shops.
July 20, 2006, 11:55
Peter BlunsdonFrom Starrett catalogue 1976
peter