Features 1、Aluminum alloy casting, surface anodized, light texture, sturdy and durable, clear scale, long service life. 2、This ruler's measuring accuracy is 1mm, the scale is accurate, and the operation is convenient. 3、The hole ruler scribe can realize multiple functions such as horizontal line, vertical line, long line, short line, right angle line. 4、This T shaped is very simple to operate, perfectly flat, accurate measurement, reliable reading. 5、Wide application. This ruler is ideal for carpentry, art, glass marking, advertising, drawing, etc. Specification Item Type: T Shaped Hole Marking Ruler Material: Aluminum 6061 Color: Red Application: Glass/Wood, Graphic Ruler, Woodworking Ruler, Drawing Advertising Ruler Package List 1 x Cave Tip Line 1 x Right Angle Handle 1 x Hex Wrench 1 x Refill 4 x Screw