Looking for a bit of insight into my M1907/M1913 Military Sketch Kit I am trying to complete - reasonably successful so far.

It came with tripod legs, but no tripod head. Good News - I have sourced a head from an auction site, Bad News - the rather unique military attachment screw has been converted to 1/4x20!

I have a few ideas to work around this but am hoping for assistance with

- As I look for parts on-line, what size "Folmer" head would this be called? it is 4.5" across, and I have seen here in the HELP section that it is a #2?

- I will be going to the hardware store today to try and match up the threads on the board to a size. Does anyone know or can measure the thread size on the military attachment screw

Thanks for any insight, opinions, comments, etc.

Mike

Flickr Album with a mish-mash of pics of my kit and of others.
https://flic.kr/s/aHBqjD4xH7

**UPDATE** The thread on the drafting table part is 3/8x16!

Well - some days are much better than others - this was ONE OF THEM!

At some point I realized the easiest solution to matching up the modified bolt at 1/4x20 to the table was installing a 3/8x16-1/4x20 adaptor! A-Zon comes through with an inexpensive stainless adaptor MIC.

I figured I would be needing to file down the edges of the adaptor to fully recess into the table - BUT - the tripod/table interface has a slight recess - and WOOHOO it fits nice and tight without any further effort on my part.

And - I will not be adding Loctite of any type, but maybe some teflon tape if needed for some tightness as this will NOT get a lot of use!