When you need to assess the accuracy of your machining work, this collection of assorted engineer's set squares helps with the job. The kit contains four squares in lengths of 4 inches, 6 inches, 9 inches and 12 inches.

Each set square consists of a blade of the specified length, set perpendicular to a thicker base, enabling you to check both the accuracy of measurements and the trueness of right angles. The hardened and tempered blades have been beam-grounded and blade-grounded, then lapped, so they're free from imperfections. That means they're precise and long-lasting.

The set squares meet the British and US standards BS 939 grade B and GGG-S-656E/29 Jan1966, which relate to the quality of machinist squares.

The tools come in a sturdy and durable moulded polypropylene (PP) case. This is suitable for industrial settings and holds each square in place, keeping them organized and safe in transit.

• 4-piece set of engineer's set squares
• Set comes in a moulded polypropylene (PP) case
• Made from high-quality steel
• Blade lengths of 4 in, 6 in, 9 in and 12 in
• Blade thicknesses of 1.6 mm and 2 mm
• Stock lengths of 56 mm, 75 mm, 128 mm and 172 mm
• Stock thicknesses of 8.9 mm, 10.5 mm, 19 mm and 20 mm

RS PRO is our own brand range and brings you a wide range of high-quality, great value products offering you more choice. Trusted by engineers all over the world, every part of every RS PRO product has been rigorously tested against demanding industry standards

BS939 Grade B