Set square for technical drawing, two-way scale, colour backed, 180° to 1°, 45° line, 7°, 42°, 75° angles marked, compass cut-in point at zero point, mm graduation for drawing parallel lines, Indian ink edges
clear acrylic or polystyrene

2323 - 0000: base 22 cm, detachable handle, green backed, polystyrene
2323 - 0100: base 22 cm, detachable handle, red backed, acrylic
2325 - 0000: base 25 cm, green backed, polystyrene
2325 - 0100: base 25 cm, red backed, acrylic (fig.)
2332 - 0000: base 32 cm, detachable handle, green backed, polystyrene
2332 - 0100: base 32 cm, detachable handle, red backed, acrylic