Description
Triangular Scale Rule with White ABSColour Coded. TSR-3 Ratios: 1:2.5, 1:5, 1:10, 1:20, 1:50, 1:100
Triangular Scale Rule with White ABSColour Coded. TSR-3 Ratios: 1:2.5, 1:5, 1:10, 1:20, 1:50, 1:100