Specification:  

Material: plastic
Scale Length: 30cm/12"
Total Length: about 32cm/12.6"
3 Color Coded Sides: Red: 1:250; 1:400, Yellow: 1:200; 1:300, green: 1:100; 1:500
Clearly marked metric graduations.
3 color coded sides, each side with different scales.
6 scales allow precision drawing for architects, engineers and carpenters.
Package included:
1x Triangular Metric Scale Ruler
Note:
Please allow 1-2cm errors due to manual measurement
Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same