[Leica] Copying Gauge Lens Question

[hoppyman at bigpond.net.au (G Hopkinson)]

Robert and Ed, thank you very much for the information. That is extremely 
helpful and interesting. I have the BOOWU-M. I just found
the instruction leaflet in the box along with the original packing.
So it appears that collapsible Summicron would be the easiest option to make 
this work. This construction set is nearly as much fun
as the Visoflexes to learn about and try out. The instruction leaflet says 
that the optical unit of the rigid 50mm Summicron f2 fits
with the UOORF bayonet mount. My books don't have anything on that other 
adaptor (16508 Y). I'm looking for an early Summicron to
leave on my M3 anyway, so I guess its back to the Bay for more auction fun.

Cheers, Geoff
http://gallery.leica-users.org/v/gh/a/
 
 

-----Original Message-----

Subject: Re: [Leica] Copying Gauge Lens Question

I believe that the BOOWU (#16525) was used with screw mount lenses.  I do 
not know what screw mount lenses were usable with that
Auxiliary Reproduction Unit but I would guess that the screw mount 50 mm 
Collapsible Summicron would work.

The unit that was to be used with M type Bayonet mounts was the BOWUM. 
There are at least two lenses which could be used with the BOWUM (#165256) 
One was the collapsible 50 mm Summicron in a bayonet
mount.  When collapsed the rear lens element was surrounded by a smallish 
bayonet mount (as the UOORF # 16508) which mounted
directly into one of the three adapter spacers The other lens was a rigid 
50mm Summicron (code 11817) with serial numbers from
approximately 2.268,000 to 2,995,000  (see Sartorius, Identifying Leica 
Lenses, Amphoto, 1999, p.82).  The lens head in this unit
was removable and screwed into the 16508 Y adapter which in turn could be 
fitted to the close focusing device 16507 (BOOWU).  In the
1981 catalogue, this adapter listed for $3.60. Lots of luck finding it..

There may be other lenses that could be adapted but these are the only two 
bayonet units I know of that would work.

Hope this helps.

Ed Kowaleski



Original Message -----

> Hi list. I recently got a Copying Gauge for fun and to preserve another 
> cool Leica historical gadget.
> The model is BOOWU-M 16526 H. It has three adaptor/spacers with four screw 
> in legs. The idea was/is for copying fixed area documents
> or similar.
> The one I got is in M mount and the spacers bayonet to my M bodies. 
> However the side to accept the lens has a smaller, different
> bayonet. I expected it to accept a normal M mount 50mm. I am familiar with 
> the visoflexes, that use screw thread lens heads without
> their focusing section and mount. Is this a similar idea?
> If so, which older 50mm lenses have this removable lens head with a small 
> bayonet on it? Or do they have a thread like the Visoflex
> lens I have?
> My references mention an UOORF bayonet adaptor. This looks to be small 
> bayonet to the spacer and screw thread to the lens head. But
> the instruction leaflet says that some 50mm lenses bayonet directly to the 
> spacers???
>
> You Leica goodies experts, (Marc, I'm thinking of you!) what am I missing 
> here, literally or figuratively???
>
> Cheers, Geoff
> http://gallery.leica-users.org/v/gh/a/
>