Some pics! There is about 0.75" between the board with the holes and the "cap" in the lid. Holes do show signs of use, but no sign of use on "cap' ...

@landbutcher464mhz - thanks! I'll be back with the box tomorrow and take better pics and some measurements.

Looking quite a bit better!

This pic is 20+ years ago but shows similar instrument and it's carry box!

Well - as there has not been any real excitement here or anywhere else in what I am doing (or trying to do) - I will be selling most of my aluminum an...

@john-hamilton For the record - I never used a plane table in actual survey work, but was fascinated by the whole concept and how it had been used up ...

@rplumb314 - thanks! I tested making the divots in the board and installing the inserts. Couple lessons- yes I need to get threaded rods and/or cut ...

@rplumb314 - here are some pics of an original and my repro/prototype. Interestingly enough - instructions call for the user to place a pin through t...

@rplumb314 - yes, provides resistance to warping, and keeps the endgrain from absorbing moisture. I'm skipping that detail and relying on the wood fo...

@rplumb314 - Yes - the Johnson Head has two parts that fit together. After the tripod is set roughly level, the upper (larger) thumb screw allows the...

@rplumb314 Thanks! I'm doing "old school" and do have several different alidades collected over the last thirty years (mostly from 1930's and newer),...

USP Leavenworth is basically across the street from my house. So many stories have not been told. Been inside once for lunch with Rotary Club years ...

Nice Museum! I believe the green instrument is a Wild RK1 alidade for Plane Table work. Rarely seen!