GFB Adjustable Square 30 cm with Vial

The GFB Square is 30 cm long, carries a spirit vial. A square checks the 90 degree angle between two faces: a stocked square registers against an edge, while a knife edge square has a fine blade and is checked by the light showing through — a far finer test. Used to check right angles and to mark out in joinery, welding and machine work. Models with a vial also check level in the same operation. Seza Global supplies GFB measuring instruments wholesale. Request a quote for stock, pricing and delivery.