The Moore & Wright Engineer's Squares have a precision ground blade and stock and a blind riveted construction. The blade has been hardened and tempered for longer life.
Conforms to B5939/Grade B.
The Moore & Wright 4004 Engineers Square Grade B 100mm (4in) has the following specification:
Blade Size: 130.2 x 25.4mm.
Stock Size: 76.2 x 25.4mm.
Inner Working: 57.0 x 104.8mm.
