Squares & Bevels

Choosing a Combination Square

A combination square is useful for checking 90° corners, marking 45° lines and repeating measurements from a straight edge. Its sliding head lets you set the blade to the required distance, making it practical for marking timber, checking cut ends and setting out joinery.

Options such as the combination square with metric and imperial markings provide a graduated blade and adjustable stock — the sliding head that rests against the workpiece. Compare blade length, scale readability and the locking mechanism. The stock should sit firmly against the reference edge, with the blade secured before marking.

Sliding Bevels for Copying and Transferring Angles

A sliding bevel has an adjustable blade for copying angles that are not necessarily 45° or 90°. Position the stock and blade against the existing angle, tighten the lock and transfer the setting to your workpiece. You do not need to know the angle in degrees to copy it.

A tool such as the 200mm sliding bevel is useful for angled joints and matching existing timberwork. When choosing a sliding bevel gauge, consider blade length, access around the locking nut and whether the blade can reach the angle you need to reproduce. Recheck that the setting has not moved before drawing the line.

Rafter Squares for Timber Marking and Layout

A triangular rafter square provides a fixed reference for marking across timber and laying out angles. Its fence rests against the timber edge to help position the tool. Options such as the 180mm aluminium rafter square have metric markings and scribing notches for repeated layout work.

Choose a size that suits the timber width and the lines you need to mark. Keep the fence and contact surfaces free from sawdust and debris so the square sits properly against the workpiece. Use a consistent reference face and edge when transferring measurements between pieces.

For measuring lengths, browse our tape measures. For checking horizontal and vertical alignment during installation, explore our spirit levels.

Folding Squares for Larger Layout Work

A folding square is useful for marking and checking right angles when setting out flooring, paving and other larger layouts. The 600mm aluminium folding square provides a larger reference than a compact rafter square and folds for easier storage and transport. Choose it for checking square corners and marking layout lines before cutting or fixing materials.

Buying Carpentry Squares and Bevels at MGN

Builders, joiners and DIY customers can contact our Romford, Woodford or Orpington branch for product availability and collection enquiries. Include the type of tool, blade length and intended task when enquiring, whether you need to check right angles, repeat measurements or transfer an existing angle.