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

Lufkin 6 Inch Combination Square Tempered Rule And Square With Scribe Saginaw MI

Lufkin Bevel Blade for 26B Double Square VINTAGE!

Starrett Combination Square 33HC Steel 4" Blade Square Head Center Head

6 Unbranded Combination Square Center Heads for PARTS Possibly Lufkin Starrett

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

The Lufkin Rule Co. 6 Inch Double Square No. 4 Grad Tempered MINT

Brown & Sharpe Mfg. Co. Steel 5.5” Precision Square.