Vtg Starrett Double Square #13C-6-4R Excellent, Slight Storage Wear

iGaging 6" Combination Square & 4" Double Square Set

The Lufkin Rule Co. No. 4 Grad Machinist Combination Square 6 inch

The LUFKIN Rule Co. No. 139-3" 3 x 2 Inch Thin Steel Square. Made in the USA.

The Lufkin Rule Co. 6 Inch Double Square

STARRETT No.B33J-16R 6” Long Blade for Junior Combination Squares with Inch Grad

Starrett No. 13 Double Square With One Blade

Brown & Sharpe Double Square Steel MPN 542 in Wooden Case Providence RI USA