Re: [Rollei] Tripod threads was: Hello and Question

[Jerry Lehrer <jerryleh >]

Marc

Wrong again.  The optical comparator can measure to minutes of angle.
It is an aerospace inspection tool of very high precision as well as accuracy.
Five degrees is a very large angular diference, and can easily be measured.

What is the expression "Shoemaker, stick to your last".

I promise that I will not dispute any of your legal opinions, if you will
extend me the same courtesy in my field, which is Aerospace Engineering.

Jerry

Marc James Small wrote:

> At 07:22 PM 9/23/01 -0700, Jerry Lehrer wrote:
> >I have taken impressions of the internal threads of ALL my camera
> >which have the 3/8-XX thread.  Tomorrow I will section them and
> >measure the thread angle on an optical comparator.  This will, I hope,
> >put to rest the various theories Whitworth vs US.
> >
> >Of course, some die-hards will say  "All very well, this only applies
> >to your eleven cameras, mine must have the other!"
>
> An excellent idea, Jerry.  I suspect that 5 degrees will be much like
> Benson & Hedge's "silly little millimeter longer", though, and won't be all
> that easy to measure.  Bogen/Manifrotto, Rollei, Leica -- they should be
> able to tell us, and one of them should be available tomorrow.
>
> Marc
>
> msmall    FAX:  +540/343-7315
> Cha robh bàs fir gun ghràs fir!

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