Tool with Lock Bow Divider Spring Compasses Math Compass Compass Protractor Geometry Scribe Gauge

Label:Yes Material: Metal Color: Silver Maximum circle radius: 4.6cm/1.8 Dimensions: 10.6 x 2.9 x 0.8 cm / 4.2 x 1.1 x 0.3 Package include:1Pc Compasses 1. Precision mathematical compass - for mathematical geometry and artistic drawing. 2. Unique design prevents skidding while drawing. 3. Precise adjustment - adjusting knobs enables students to produce accurate geometry. 4. You can lock the compass in place and actually hold it as you write. 5. All metal material - made of high quality parts and strong construction, durable enough to last for a long time. 6. Three additional wires can be easily replaced when required. 7. Stability: compass with spring bow and thumb wheel can prevent accidental sliding. 8. Strong metal structure, compact size, light weight, very suitable for senior students and apprentices. 9. Suitable for drawing circle or arc, suitable for mathematics and painting teaching, and also an excellent tool for carpenters.