I'm looking for aperture hole sizes so that I can have waterhouse stops made for my Dallmeyer 3A. Does anyone own a set they can measure, please?
I've made a dummy from card and measured the internal f4 aperture after drawing around it and it measures 3 7/10", so, calculating the aperture size by dividing the focal length (16") by the f-stop doesn't calculate to be accurate.
After contacting around 5 different owners who's work I found on Flickr using a 3A I haven't received a single reply so I'm trying on here.
If you own an original set of WHS please would you measure the aperture sizes and share this information.
Many thanks
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