Architectus

Nice solid looking square.

 

I recognize the compass, plumb bob and what looks like a scale, what are the other things?

Nice solid looking square.

 

I recognize the compass, plumb bob and what looks like a scale, what are the other things?

His calculator (abacus) , most important of all his rule (collapsible), a piece of fantastically valuable lapis lazuli ( for top quality blue pigment), some dividers, and a lamp to work into the night!

Oh, I did not even see the abacus lol it's so tiny in the pic it kind of resembles a dirty old circuit board! Of course a circuit board has no place in the office of a Roman Architectus, so I was truely confused.