Try Squares

About Try Squares

A try square is a fundamental precision measuring tool used to mark and test 90-degree angles in woodworking, metalworking, and construction. Featuring a flat blade fixed perpendicular to a thicker stock (handle), try squares are essential for checking corner squareness, marking perpendicular lines, and ensuring accurate joinery. MyToolShed.co.uk stocks an extensive range from trusted manufacturers including Hultafors, Faithfull, Draper, Bahco, Starrett, Stanley, and Irwin, with sizes typically ranging from 150mm to 300mm blade lengths.

Our selection includes traditional all-steel engineer's squares for precision metalwork, lightweight aluminium models ideal for site carpentry, and combination try and mitre squares offering additional 45-degree functionality. Many feature dual metric and imperial graduated markings, whilst premium models like the Hultafors Quattro 270 offer adjustable angles beyond standard 90 degrees. Whether you're a professional joiner or DIY enthusiast, MyToolShed stocks try squares suited to every trade and budget.

Applications

Try squares are indispensable measuring tools used across numerous trades and projects:

• Carpenters and Joiners: Marking timber joints, checking door frames, and ensuring cabinet corners are perfectly square
• Cabinet Makers and Shopfitters: Precision work where tight tolerances and accurate right angles are critical
• Metalworkers and Engineers: Marking out components and verifying machined edges meet exact specifications
• Bricklayers and Stonemasons: Checking corner accuracy when laying blockwork and ensuring walls rise true
• Plumbers and Heating Engineers: Marking cut lines on pipes and verifying installation angles
• DIY Enthusiasts: Home improvement projects from decking to shelving where accurate angles ensure professional results
• Students and Apprentices: Learning fundamental marking-out techniques in construction and engineering courses

Choosing The Right Try Squares

Size and Blade Length: Consider your typical work scale. A 150mm try square suits detailed joinery, whilst 250-300mm models handle larger timber sections and site carpentry. Many professionals keep multiple sizes for different applications.

Material and Construction: Steel try squares offer maximum durability and precision for engineering and metalwork. Aluminium-bodied versions with stainless steel blades balance accuracy with portability for site work. Hultafors Lightweight models suit tradespeople carrying tools all day, whilst Starrett and Faithfull Prestige ranges provide engineering-grade precision.

Accuracy Requirements: Professional-grade squares from Starrett, Bahco, and Draper Expert are precision-ground to tight tolerances. Look for securely welded construction rather than riveted, as this maintains accuracy over time. Budget options suit occasional DIY use but may not offer long-term reliability.

Features and Graduations: Consider whether you need metric, imperial, or dual markings. Etched graduations outlast screen-printed versions. Combination squares like the Draper or Irwin Try and Mitre Square add 45-degree angles without carrying multiple tools.

Frequently Asked Questions

What's the difference between a try square and an engineer's square?

Try squares typically feature wooden or aluminium stocks with steel blades, designed primarily for woodworking. Engineer's squares are manufactured entirely from hardened steel with precision-ground faces, offering greater accuracy for metalworking where tolerances are more critical. Engineer's squares generally conform to BS 939 standards.

How do I check if my try square is still accurate?

Draw a line along a straight edge using your try square, then flip it over and align from the opposite direction. If the blade aligns perfectly with your original line, the square is accurate. Any gap indicates it's out of true.

What size try square is best for general carpentry?

A 250mm (10") try square is most versatile for general carpentry and site work, spanning common timber widths whilst remaining portable. Many professionals also keep a 150mm (6") version for detailed work in tight spaces.