[Leica] Copying Gauge Lens Question

[ekowaleski at twmi.rr.com (Ed Kowaleski)]

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 ----- 
From: "G Hopkinson" <hoppyman@bigpond.net.au>
To: "'Leica Users Group'" <lug@leica-users.org>
Sent: Friday, November 30, 2007 6:57 PM
Subject: [Leica] Copying Gauge Lens Question


> 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/
>
>
>
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