Dr Feickert Protractor


Hi 

I wonder if anyone can help.  I've just sold a Dr Feickert Mark II Projector on a well known auction site - it didn't have the allen key with it and the buyer is asking me what size key he needs to buy  - would anyone know what size key is needed for this ?   I've checked on the instruction manual and it's not listed. Many thanks.
juwi
A guy with a protractor would also be a guy with a complete set of Allen wrenches, both SAE and metric.  Like me.
Just curious....

I've owned and used the Feikert many years. When I purchased it, there wasn't a hex wrench with it. What is it used for? 

There are 2 adjustments for the jig via thumbscrew.
There's a 2nd set screw found on the underside of the tower that holds it on the plate. Usually only requires unscrewing for shipping purposes.