Service Bulletin: SB 079.1
Subject: Elapsed Time Meter
A less expensive and more readily available elapsed time meter is available as a replacement of earlier models supplied on machines delivered since 1975 (ref. Lot 3300)
This replacement model can be supplied for either 60 Hz or 50 Hz installations.
For initial conversion from existing Simpson Meters an Adapter Plate can be supplied for convenient changeover. When ordering specify:
Elapsed Time Meter
20001/60 Hz or 20028/50 Hz