10KV Panel Meter Model 1531 Ruggedized

These are new old stock. Sale is for 1. Full scale 1mA. So will need 10 megohm resistance in series to read full scale. These are old. So have shows some signs of sliding around in a box. Not perfect, but not bad. So may have some scuff marks on lenses. These are probably from late 40’s to 50’s. These are heavy all metal case not plastic housing.