Features Aluminum alloy casting, surface anodized, light texture, sturdy and durable, clear scale, long service life. The measuring accuracy of this ruler is 1 mm, the scale is accurate and the operation is convenient. The hole ruler pen can realise multiple functions, such as B. horizontal line, vertical line, long line, short line, right angle line. This T-shaped device is very easy to use, perfectly flat, accurate measurement and reliable reading. Wide range of applications. This ruler is ideal for carpentry, art, glass marking, advertising, drawing, etc. Specification:Item Type:T-shaped Hole Marking Ruler Material: aluminium 6061. Colour: red. Application: glass/wood, graphic ruler, woodworking ruler, drawing advertising ruler Package List:1 x Cave Tip Line1 x Right Angle Handle1 x Hex Wrench1 x Refill4 x Screw Package List 1 x Cave Tip Line 1 x Right Angle Handle 1 x Hex Wrench 1 x Refill 4 x Screw