I have restored mostly just hand planes but I do sometimes find other old tools that I will restore. Somewhere along the road of searching for old planes I found this square and picked it up. Any old tool with Rosewood and brass is worth restoring IMO.
I have no idea who made this as there are no markings other then some hand cut markings on the metal rule, maybe previous owners stamp idk? That really does not matter though, what matters is that another old tool has been rescued, given new life and will now serve me in my shop.
This restoration only took me a couple hours which is quick compared to the planes. I cleaned the metal rule up with oil and wet/dry paper. I removed the brass parts which was the biggest challenge due to the small screws and their condition. Once removed I lapped the brass plate flat and polished the rest. I spent a little time tuning it all so that it would be fine tuned for using.
The Rosewood part was sanded and finished with a couple coats of tung oil.
-- Dan - "Collector of Hand Planes"