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  1. 3rd February 2013, 10:17 AM #16
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    jhovel
    jhovel is offline GOLD MEMBER
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    Ken,
    while it was called a Starrett Mechanical Tachomenter, it is actually a "Rev Counter", a term rarely heard now. So if you count the revs against a clock, it tell s you the reves per minute. I could and was also used to count turns of windings on coils, measure gear ratios (rather than opening gear boxes and count teeth) and things like that. In the first factory I worked in they used them regularly.
    Cheers,
    Joe
    9"thicknesser/planer, 12" bench saw, 2Hp Dusty, 5/8" Drill press, 10" Makita drop saw, 2Hp Makita outer, the usual power tools and carpentry hand tools...
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  3. 3rd February 2013, 10:48 AM #17
    Machtool
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    Quote Originally Posted by neksmerj View Post
    Are the mechanical tacho's worth anything, or just nostalgic value.
    There's two of them on US Ebay now. One at $9.99 with no bids, and the other at $114.99 Buy it now.

    So prices are all over the place. To the right collector, they can bring good money.

    Regards Phil.
  4. 3rd February 2013, 05:21 PM #18
    kwijibo99
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    These types of mechanical taco's came with different tips to allow them to be used on different types of shafts, some also came with a disk attachmet of a particular circumference which allows you to measure belt speeds.
    There are many different types of these mechanical rev counters, I have several different versions but my favorite is my Hasler with a built in timer that calculates the RPM in about 10 sec and is good for 10000rpm.
    Give me my Hasler any day over a laser tacho.
    Cheers,
    Greg.
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