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Carpenter Squares & Rulers 400 mm

 prices on 15 models
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Used primarily in roofing and carpentry applications, this framing and rafter square has both a metric and imperial scale for additional versatility.
Price from £5.47 up to £20.20 
Compare prices and buy BlueSpot 600x400mm Framing Square (24x16")
£5.00
£8.00
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£10.00
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The Draper Carpenters Framing Square is a precision measuring tool designed for accurate carpentry, roofing, and framing work. Constructed from quality steel for durability and long-term reliability, this essential layout tool provides tradespeople with the accuracy needed for setting out stairs, checking right angles, and marking out timber frames. This dual-marked framing square offers maximum versatility on site, with metric measurements clearly marked on one side and imperial measurements on the reverse. The generous 610 x 403mm dimensions make it ideal for laying out larger carpentry projects, including roof rafters, stair stringers, and timber frame construction where precision is critical.…
Price from £5.26 up to £10.33 
Compare prices and buy Draper Carpenters Framing Square 403mm 600mm FS400
£5.00
£9.00
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A staple for carpentry and roof framing, the Faithfull Roofing Square provides a clear reference for setting out and marking roofing and woodworking tasks. Also used as a rafter or framing square, it suits hand-cut roof work where accurate layout is required for hips, valleys, bird beaks, plumb cuts and overhang cuts. Heavy-duty steel construction gives it a robust feel, while the black powder-coated finish adds corrosion protection. Metric and imperial graduations are clearly marked, and conversion charts on the reverse support rise and pitch calculations during setup and marking out. Key features - Heavy-duty steel construction - Black powder-coated finish for corrosion protection - Clearly …
Price from £12.84 up to £13.50 
Compare prices and buy Faithfull Rackhams Black Steel Roofing Square - Multi Colour - Multi Colour - 600 x 400mm
£13.00
£14.00
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Multi-purpose combination square for use in both wood and metalworking applications. Each square features a high-quality cast and machined sliding stock, fitted with a stainless steel rule engraved with both imperial and metric graduations, a spirit level and marking scribe. The Faithfull combination square has at least 10 different uses including measuring rule with metric and imperial scale, 90° inside square, 90° outside square, 135° inside square, 45° inside square, horizontal level, vertical level, T-square slide, marking gauge and depth gauge. Specifications Suitable for wood and metalworking applications Stainless steel Imperial and metric measurements Spirit level Marking scribe Rule…
Price from £13.74 up to £24.99 
Compare prices and buy Faithfull Combination Square 400mm , Red FAICS400 (16in)
£14.00
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The Prestige Combination Square is made from aluminium using computer numerical controlled (CNC) machines. The black anodised finish offers enhanced corrosion protection and the laser-etched scales give outstanding measurement accuracy. It is suitable for marking out 45°, 90° and 135° angles. The square incorporates a handy spirit level for accurate 90° horizontal and vertical readings and a marking scribe located in the stock. Faithfull 'Prestige' products are manufactured to the highest standards and are covered by a 10-year guarantee. Features: Black anodised finish for corrosion protection Laser-etched scale for accuracy Laser-etched scale for accuracy For woodworking and …
Price from £16.51 up to £27.99 
Compare prices and buy Faithfull Black Aluminium 400Mm/16In Combi Square, Black FAICS400CNC
£17.00
£18.00
£21.00
£21.00
£21.00
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For accurate layout and checking in wood and metalworking, the Faithfull Combination Square brings several measuring and marking functions into one compact tool. It has a cast and machined sliding stock paired with a stainless steel rule, engraved with both imperial and metric graduations. A built-in spirit level and marking scribe add further practical use at the bench or on site. This square supports at least 10 functions, including 90° and 45° angle checking, 135° inside square use, horizontal and vertical levelling, T-square sliding, marking gauge and depth gauge applications. Key features - Suitable for wood and metalworking applications - Cast and machined sliding stock - Stainless ste…
Price from £22.31 up to £23.40 
Compare prices and buy Faithfull Rackhams Combination Square - Multi Colour - Multi Colour - 400mm 16 in
£22.00
£23.00
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The Bahco sliding Combination Square has both metric and imperial markings on its ruler. It can mark 90 degree and 45 degree with an adjustable depth for repetition marking and scribing. The built-in level bubble provides approximate marking and the square has a metal scriber contained in the end. Features: Sliding combination square Blade has metric and imperial scale Adjustable depth for repetitive marking/scribing Built-in level bubble for approximate marking Metal scriber contained in the end Specifications: Dimensions: H:42.1 x W:14.5 x D:1.9 cm Colour: Multi Model Number: BAHCS400
Price from £14.23 up to £29.99 
Compare prices and buy Bahco Combination Square 400Mm, Multi BAHCS400
£14.00
£16.00
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£17.00
£17.00
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The 400mm Bahco B Series Try Square is the largest size in the range, providing maximum reach for substantial workpieces, large timber sections, and major construction projects. This carpenter's square is punched out of quality steel in a single piece, ensuring true 90° precision even across its extended length. The 400mm reach is invaluable for professional carpenters, shopfitters, and construction tradespeople working with wide boards, large panels, or structural timbers where accuracy over greater distances is essential. For accurate marking of 45° and 90° angles on these substantial workpieces, this try square delivers the extended capability required without compromising on precision. De…
Price from £24.74 up to £37.95 
Compare prices and buy Bahco Steel Square 400mm 9045B400
£25.00
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£32.00
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The Bahco 400mm Try Square is the largest variant in the range, specifically designed for substantial joinery projects, timber framing, shopfitting, and large-scale carpentry where maximum blade reach is required. This 400mm blade length is ideal for checking angles on door frames, large cabinet carcasses, staircase components, and structural timber work. Constructed with an aluminium block and precision stainless steel blade, this try square maintains impressive 0.1/100mm accuracy even at its extended length, ensuring reliable measurements on your largest workpieces. The traditional design incorporates both 90° and 45° angle guides for versatile marking applications, whilst the removable in…
Price from £17.99 up to £37.95 
Compare prices and buy Bahco Try Square 400mm 9048400
£18.00
£25.00
£27.00
£32.00
£32.00
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Features MaximumFunctionality:ThewoodworkingSquarenotonlyservesformarkingbutalsoincludesascribingneedle,alevel,andameasuringgaugeforprecisemarkings.
Price from £45.11 up to £144.49 
Compare prices and buy Presch Try Square 400 mm | Large | Includes rust-free marking gauge , level bubble & marking pin | 90? & 45? | Carpent(40cm)
£45.00
£52.00
£144.00
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Features MaximumFunctionality:ThewoodworkingSquarenotonlyservesformarkingbutalsoincludesascribingneedle,alevel,andameasuringgaugeforprecisemarkings.
Price from £82.00 up to £87.42 
Compare prices and buy Presch Try Square Set | 200mm, 300mm & 400mm | All-in-One Compact Set | Includes rust-free marking gauge (20cm, 30cm & 40cm)
£87.00
£10.00
£16.00
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