Beautiful Old Heavy Brass Drafting / Carpenter's Triangle elegant bowl held together with these gorgeous

held together with these gorgeous

A lovely chip-carved wooden frame with a great shape to it--I especially love those rounded bottom corners looking like suns or wheels--and with glass still in it

clearly with old horizontal fold lines and a few small stains

Writing in the upper right corner of first inside page

"KEEP" circled many times in red

Beautiful Old Heavy Brass Drafting / Carpenter's Triangle elegant bowl held together with these gorgeousSo many beautiful tools in the world! (And I'm in the dark about how to use most of them!) I would guess this old brass triangle was used by a carpenter, or a framer (?), through would certainly look very lovely now sitting atop a pile of papers on a drafting table, or a studio table now. I especially love the the raised rectangle near the 30 degree angle, which would allow one to rest a ruler against it to draw a straight line in the opposite