Is this a plotting board holder?
Gents
I was out at the museum yesterday and took some measurements of my CGT ceiling just above driver. What was the purpose of the holder, the box at the window and the 2 -1/4 NC stud mounts?
The other question is there is a wooden block in the middle, it should also have a spring clip which I haven't made yet? I also added 2 pictures of the Newtonville CGT in 2004.
Walde
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