Starrett Double Square

Starrett Double Square

Given their guaranteed accuracy, these delightfully handy squares offer a versatile alternative to fixed steel squares. They're accurate both inside & out, and their adjustable graduated blades (8ths, 16ths, 32nds & 64ths) also enable them to check square in places too tight for fixed blades, perform measuring chores and be set precisely for scribing or marking set depths. 6 inch size has a spirit level in the handle.