Covering a range of different scales, this collection of engineer's set squares is ideal if you need an accurate assessment of your machining work. The four squares are housed in a rugged polypropylene case and come in lengths of 49 mm, 75 mm, 98 mm and 150 mm.

The two perpendicular blades of each set square are made from high-quality steel that's been hardened and tempered for extra toughness and strength. During the manufacturing process, they've been beam-ground and blade-ground then lapped, which removes any bumps or imperfections from their surface to ensure an even greater degree of accuracy.

Conforming to the BS (British Standard) 939 grade B classification for squareness, as well as the American GGG-S-656E/29 certification, these engineer's set squares have also been extensively tested to meet RS PRO standards. Ideal for quality control in manufacturing and construction environments, they're often used in workshops.

• 4-piece set of engineer's set squares
• Made from high-quality steel
• Blade lengths of 49 mm, 75 mm, 98 mm and 150 mm
• Blade thickness of 1.6 mm
• Stock lengths of 32 mm, 42 mm, 56 mm and 75mm
• Stock thicknesses of 8.9 mm, 10.5 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