Durant Digital Instruments Model 5-D-11-R mechanical counter 5D11r - 1:1 Ratio

Durant Digital Instruments Model 5-D-11-R mechanical counter

VTG Durant 6-H-1-1-R 1:1 Ratio Industrial Counter 6 Digit Tested Works See pics

Veeder-Root 727214-002 4-digit mechanical stroke counter Ratchet drive Timer

Durant Eaton Model 6-M-1-2-R Vintage Stroke Counter With Key

Eaton Durant 50SM-40463400 Mechanical Revolution Counter, Ratio 10:1, 5-Digit

Durant Eaton Stroke Counter 5-X-1-1-R 5 Digit Knob Reset Mechanical

Eaton Durant Mechanical Stroke Rotary Counter Vintage