Erb’s Standards of Electrodes

Proposed standard sizes for medical electrodes as follows:
  Name.         Diameter.
 Fine     Electrode,   1/2   centimeter   .2      inch
 Small       "         2        "         .8        "
 Medium      "       7.5        "        3.0        "
 Large       "       6X2        "        2.4 X .8   "
  Very large "      16x8        "        6.4 x 3.2  "