product information:
Brand: duratec
Measurement accuracy: 0.01
Specifications: 867 square ruler 3 inches (length 8cm wide 5cm), 867 square ruler 4 inches (length 10cm wide 10cm), 867 square ruler 6 inches (length 15cm wide 15cm), 867 square ruler 8 inches (length 20cm wide 20cm), 867 square black 8 inches (length 20cm, width 20cm), set A (3 inches, 4 inches, 6 inches, 4 pcs each), set B (4 inches, 4 pcs), set C (4 inches, 2 pcs, 6 inches, two), set D (4 in 6 inches)