1、This is a-compass with adjustable radius and very convenient adjustment. It is also very convenient to draw lines and has a fine sense of use. 2、There are two specifications, large and small, you can choose the specifications you want. 3、The maximum radius of the large model is 75cm, and the maximum radius of the small model is 45cm. The-compass is small and light, convenient to carry, you can take it anywhere you want. 4、The-compass tips is made of No.45 steel, which has high strength, is not easy to deform and has a long service life. 5、The radius-range can be adjusted by 180°, you can adjust it to your want. 6、The product has a rotary switch, which can be adjusted to control the holding-length of the pen. 7、The product body is made of zinc alloy and plastics material, which is durable. This is an essential tool for woodworking enthusiasts.The product chooses fine quality material, the material of-compass tips is 45 steel which is durable. The product is small size that you can take it with you wherever you want. Come on and try it. Features: This is a-compass with adjustable radius and very convenient adjustment. It is also very convenient to draw lines and has a fine sense of use. There are two specifications, large and small, you can choose the specifications you want. The maximum radius of the large model is 75cm, and the maximum radius of the small model is 45cm. The-compass is small and light, convenient to carry, you can take it anywhere you want. The-compass tips is made of No.45 steel, which has high strength, is not easy to deform and has a long service life. The radius-range can be adjusted by 180°, you can adjust it to your want. The product has a rotary switch, which can be adjusted to control the holding-length of the pen. The product body is made of zinc alloy and plastics material, which is durable. Specifications: Material: plastics Type:(optional) Type1: small Type2: large Largest radius: Type1: 450mm / 17.7in Type2: 750mm / 29.5in Length of the unilateral: Type1: 250mm / 9.8in Type2: 400mm / 15.7in Model: Type1: 250 * 900mm / 9.8 * 35.4in Type2: 400 * 1500mm / 15.7 * 59.1in Package size: Type1: 260 * 30 * 30mm / 10.2 * 1.2 * 1.2in Type2: 460 * 30 * 30mm / 16.1 * 1.2 * 1.2in Package weight: Type1: 210g / 7.4ounce Type2: 260g / 9.2ounce Packing List: 1 * Divider 1 * Divider Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.