Help with info for stopwatch cal. UNITAS 372-45C

Thread: Help with info for stopwatch cal. UNITAS 372-45C

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  1. #1
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    Help with info for stopwatch cal. UNITAS 372-45C

    Hallo spec. ...
    I have bought that beautifull stopwatch "ARISTO IMPORT Co" cal. UNITAS 372-45C.
    I can not find any info. about that watch - that caliber - at all!!!
    Mainly I am interresting in alternatives for balance staf (or whole balance) for that caliber, because mine has broken pinions.
    Would be interresting to hear anything about that watch.
    I will add a photo of the movement.

    Name:  20150214_181851.jpg
Views: 141
Size:  2.63 MBName:  20150214_142700.jpg
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Size:  2.59 MB

    Thank You in advance!

  2. #2
    Zenith Forum Co-moderator
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    Re: Help with info for stopwatch cal. UNITAS 372-45C

    Welcome to Watchuseek! I'm sorry but I know nothing about that calibre either. www.balancestaffs.com have an extensive range of Unitas staffs but don't list your exact one. Since it is probably a chronograph mechanism placed on top of a relatively standard non-chronograph Unitas calibre, your best bet would be to find out what your movement is based on and going from there. Good luck!

    Hartmut Richter

  3. #3
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    Re: Help with info for stopwatch cal. UNITAS 372-45C

    Thanks Hartmut Richter,
    I can not believe, that there is 0 information about this movement in whole internet! Google finds=0!
    But anyway maybe there are any clever guys, who knows something?

    Best
    VT

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  5. #4
    Zenith Forum Co-moderator
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    Re: Help with info for stopwatch cal. UNITAS 372-45C

    The base calibre looks something like this:

    bidfun-db Archiv: Uhrwerke: Unitas 30

    ...but with the geartrain bridge and escapement gear cock fused together (probably to provide a better attachment for the lever arm of the chronograph clutch gear, plus its spring). However, that does not by any means guarantee that the Cal. 30 is the one you are after. I would first check the exact diameter and, if that is feasible, check the exact movement height (or get a watchmaker to do it). Once you have those, check Ranfft's specifications for this and similar Unitas movements and get a balance staff for the movement you find.

    (One slight technical addition: you mean that the pivot is bust on the staff, not the pinion. The pivots form the ends of the staff, a pinion is a gear with few teeth.)

    Hartmut Richter

  6. #5
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    Re: Help with info for stopwatch cal. UNITAS 372-45C

    I will follow your advice and check that.
    Yeah... of course pivots are broken Thats the hobbyist missing spec. terms in english .

    But...anyway...
    Thanks for help!

    VT

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