- Edmonton, Canada
- US $39.99
- Jan 29th
Bach-Simpson Ltd. Roentgen meter model number 25SR This roentgen meter has a logarithmic scale starting at a 0 position and running to 500m with the positions 0, 1, 5, 10, 20, 50, 100, 200 and 500 labelled explicitly; at the 50 mark is a label that reads "check." The scale is labelled as being in "r/hr". These meters are simply display devices, with two brass nuts on the back to fasten electrical wiring to.