Metric 30cm Triangular Engineer Scale Drawing Black Aluminum (1:20,1:25,1:50,1:75,1:100,1:150)
1. The scale is made of solid aluminum, the scale using laser etching process, lightweight, clear scale, not easy to wear.
2. There are 6 scale scales: 1:20,1:25,1:50,1:75,1:100,1:150; please note that the symbol "/"on the scale is equal to ":", which will not affect the use.
3. Easy to use, when drawing and measuring dimensions, directly use the scale above to draw, save the trouble of conversion.
4. Widely used in engineers, architects, designers, students, mechanical measurement and other fields.
5. 1pcs x metric 30cm trigonometric engineering scale.
