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| | USS Pampanito -Operating Instructions for ASAM 1 (a.k.a. ECM Mark II) |
 | | The number 1 indicates that rotor number 1 (or 11 or 21, etc.) is to be used; the number 5, rotor number 5 (or 15, or 25, or 35, etc.); the number 0, rotor number 10 (or 20, or 30, etc.). |
 | | Rotors marked 2, 3, 9, 1, and 5 (disregarding the tens digits) will be inserted in the control position in that order, from left to right, as the operator face the converter, with rotors number 3 and 9 reversed. |
 | | The numbers indicate the "units" digit of the number to be aligned on each index rotor. |
| www.maritime.org /ecminst.htm (7650 words) |
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