Made of ABS resin.
This triangular scale is made of ABS resin with low elasticity.

For Land House Surveyors (for household)
Graduations are 1/100, 1/200, 1/250, 1/300, 1/500, 1/600.
The millimeter measurement is the coarse scale for the landhouse investigators who need to measure from a finer perspective.

Product Specifications
Product Size: 6.7 x 0.6 x 0.6 inches (170 x 16 x 14
Scale Size: 5.9 inches (15 cm).
Color: Light green
Scale (groove color): 1/100, 1/500 (black), 1/200, 1/250 (red), 1/300, 1/600 (blue).
Specifications: For pockets (for households), JIS
R-ABS

From the Manufacturer

Triangular Scale: ABS 5.9 inches (15 cm) (for household); Product Number: TZ-1561NG

For home use.1/100, 1/200, 1/250, 1/300, 1/500, 1/600. Triangular scale for pockets made of ABS resin with low elasticity.

Product specifications Material: R-ABS, Scale Size: 5.9 inches (15 cm), Specifications: Pocket (for household) (JIS), Graduation: 1/100, 1/200, 1/250, 1/300, 1/500, 1/600.