PRACTICAL DESIGN: The precision ruler has mini fine marker hole slots for precise positioning of a pointed pencil or scriber, and the T-shaped ruler is great for drawing lines where you them, perfect for woodworking High-quality material: Made of stainless steel, the scale is clear and accurate, durable Easy to use: The stainless steel T ruler is easy to install and replace, the detachable knob allows you to easily replace other rulers, it is a good measuring tool, easy and convenient to use, square T ruler combined with deep , durable Wide range of uses: carpentry tools are multi-, can draw horizontal lines, vertical lines, long lines, short lines, parallel lines, right-angled lines; widely used in fields, high precision, is the carpenter, , engineer, architect perfect . Colour:As Shown Material:Stainless steel Size:25 x 8cm Package Contents: 1 x Stainless steel T shaped ruler Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.