Engineers Square 150mm 6in Machinist Square

An engineers square is a straightforward hand tool used for checking and marking true 90° angles during bench, workshop and metalworking jobs. This 150mm / 6in machinist square gives you a clear reference when accuracy matters for layout, setup and general inspection.

Used for marking out lines before cutting, drilling or filing, it suits metalwork, workshop fitting, fabrication, maintenance and general repair tasks. It is also handy for checking whether edges, corners and components are sitting square during assembly or setup, whether you are working in a garage, on a bench, or carrying out DIY repairs that need a reliable right-angle check.

The 150mm / 6in size makes it easy to handle for close work while still giving enough length for a wide range of everyday measuring and marking tasks. As an engineers or machinist square, it is intended for checking and transferring a 90° angle rather than for adjustable measuring, which keeps the job simple when you need a fixed reference. For repeated workshop use, having a dedicated square close to hand can help avoid guesswork and keep marking-out work more consistent. Its simple metal construction also makes it a practical option to keep on the bench, in a toolbox or alongside other marking and measuring tools for regular use.

Engineers square specifications

• Size: 150mm / 6in format for common bench and workshop tasks.
• Function: Used to check and mark true 90° angles.
• Type: Engineers square, also known as a machinist square.
• Application: Useful for metalworking, fitting, setup and general repair work.
• Handling: Fixed square format gives a simple reference point for quick angle checks.

A practical choice for regular workshop marking, checking and setup work.