Hour meter - format 48 x 48 - AC or DC auxiliary power supply
Hour meter - format 55 x 55 - AC or DC auxiliary power supply
Hour meter - format 72 x 72 - AC or DC auxiliary power supply
Frequency meter - Format 72 x 72
Frequency meter - Format 96 x 96
Frequency meter + Hour meter - Format 96 x 96
Automatic synchrocoupler - format 96 x 96