This professional woodworking scriber line made of aluminum alloy , 't break from bending or rusting, more durable and sturdier than the plastic one. The woodworking compass scriber has high precision, suitable for professional drawing. The woodworking compass scriber can adjustable radius size, meet your various drawing needs. The woodworking compass scriber has metric imperial dual-scale for easy adjustment. The fixed pen can be and stored at of the main body, so you can take it as you go. Colour:red Material:Aluminum alloy Package Contents: 2 x line gauge 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.