Hemmi Foxboro Flow and Valve Rule

Country of manufacture: Japan, (Hemmi)            Date of manufacture: January, 1976 (from manual)
Overall length: 33.5 cm,          Width: 4.5 cm,           Weight: 96.8 gms
Materials: all plastic, glued on end braces on back side to elevate rule off work surface
Cursor: 3.4 X 5.4 X 0.8 cms; all plastic; lines = one each, on front and back
Scales: many specialized
Front:
Back:
Condition: C3-C4 (Very minimal to minimal signs of use)
Came with: Original cardboard box, leather case, manual