Archived posting to the Leica Users Group, 2005/01/27

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Subject: [Leica] Screw Mount Lenses
From: Thinkofcole at aol.com (Thinkofcole@aol.com)
Date: Thu Jan 27 07:08:08 2005
 
Bill, here's a pix of a Leica Valoo. They all were black. You can't  see it 
in the pix, but it has a knurled set screw to tighten it onto the lens.  
[Ritz 
has one with a broken set screw for $29, if still  available. A screw with 
the 
correct thread could easily be  found in a good screw store.] 
  As mentioned, it can be used on the Elmar 50/3.5 as a lens hood in  normal 
use or an attachment to the lens when used on an enlarger. The  Valoo has a 
slot that fits over the tiny slide on the lens to change  apertures. 
  Leitz also made earlier devices, maybe from the 1930's, to  change the 
aperture but not to be used as a hood. They all were nickel [or  unpolished 
chrome] and dubbed Valau, Voolq and Voola.
  I had the Valoo and the Valau and sold them with an Elmar and a  Valoy 
enlarger around 1965, all for $50. 
  Regards, bob cole