Ever see a Brown And Sharpe Machinist Square Like This??

[TimberKing]

I picked this up recently at an auction. I just got around to checking it out. Its a large one 27” x 14” OD. To my surprise it is held together by bolts. Pentagon headed bolts to be exact. Its old. The patent date is June 7 1904. It doesn’t have the B&S logo with the square. Ive had a 541 from the 40’s but it didn’t have bolts. I found another one like it on ebay $299 but it is newer. Anyone ever see one like this before? Is there a reason they used bolts instead of dowels? Any info would be much appreciated. I put it on ebay (because the wife will have a fit if I don’t) but I really don’t want to sell it. Hence the price. I think it looks good on the shelf in my office….

 

[smackaay]

Never seen one like it. It'd be nice to have if you have the equipment to periodically re-square it and use it as intended.

 

[cyanidekid]

from my 1938 "small tools" catalog ( note the price for the 36" is 115! that would be like 2K now);

 

[RC Mech]

I have a Starrett with a 18” beam and 36” blade with the pentagonal bolts. Looks nearly identical to how yours is fastened.