[rollei_list] Re: ?? True Sizes of Tripod Mounting Holes
- From: Peter J Nebergall <iusar4s@xxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Tue, 28 Aug 2007 10:08:54 -0700
Thank you for clarifying this point! Ever since my old Praktiflex (in
1966!) I've wondered why my many 3/8 equipped pieces didn't work on 3/8
thread......
Peter Nebergall
On Mon, 27 Aug 2007 16:12:55 -0700 (PDT) John Jensen
<jwjensen356@xxxxxxxxxxxxx> writes:
> Marc, I don't see that there is an equivalence to the
> Unified thread and to a standard metric thread. For
> the 3/8-16 thread the pitch distance is 0.0625". This
> is equal to 1.5875 mm. The 3/8" (0.375") thread size
> is slightly smaller than an M10 which has a thread
> size of 0.3937" and a pitch of 1.5 mm.
>
> If there were a hypothetical M9.5 thread (0.374") with
> a 1.5 mm pitch, it would come quite close to matching
> the 3/8-16 thread size. But I don't see that there is
> such an animal.
>
> John
>
> --- Marc James Small <marcsmall@xxxxxxxxxxx> wrote:
>
> > I would like to know the true specifications of
> > the two common tripod threads. I believe that
> > the larger thread has a Metric measuremetn which
> > works with an SAE thread. I would appreciate
> > your help in providing the SAE and Metric
> > measurements for both the smaller and the larger
> > mounts. Extra points to those who can identify
> > the actual pitch of the thread (DIN, SAE, or
> > Whitworth, or whatever).
> >
> > Enquiring Camera Lore Fanatics Want to Know!
> >
> > Marc
> >
> >
> >
> > msmall@xxxxxxxxxxxx
> > Cha robh bàs fir gun ghràs fir!
> >
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