[Milsurplus] Help with TCS Screw thread sizes

[Dave]

Hello all,

I am restoring an early TCS pair (pre -5) and I am having to 
have new front panels made due to modifications done by past 
owners. The front panels of these are made from sheet 
aluminium as opposed to the cast alloy panels of later 
variants.  I need to know some screw sizes and threads so 
that I can tap the corresponding threads into the panels. I 
have the screws but don't have a thread gage.

a.  the screws that attach the logging chart frames, and

b.  the screws that retain the meters in the transmitter

I know there are others for control lock supports but they 
are the same as "a".

Can anyone identify these, please?

Cheers
Dave
VK4KDP