1. Steel ribbon
Used to measure sides in polygons. Accuracy of 1 mm / 100 m.
Made of special quality steel strip, 2-2.5 cm wide and 0.4 mm thick.
Divided from 10 to 10 dm by perforations, from 0.5 to 0.5 m by Copper rivets (circular or rhomboidal), from m to m by plates on which the number of meters is stamped and from 5 to 5 m.
The divisions are marked in different directions on both sides of the ribbon.
2. Steel roulette
Made of a steel strip with a width of 1.2 - 1.5 cm and a thickness of 0.2 mm.
The measurement accuracy is 1 mm / 10 m.
The length of the roulette is 2, 5, 10, 15, 20 30, 50 m