Manufacturer: PRECISON Apparatus Co. Inc. (USA)
Model: ES-500A, S#11616
Vintage: 1952
Purpose: General Purpose, TV Service
Condition: Working
Comments:
This oscilloscope was in the same hands since 1953, when it was originally purchased. Thanks to Jim Neal for allowing me to add it to the collection.
The unit appears to be in original condition except the power cord. The CRT is a 5CP1. Some potentiometers are difficult to move but work. The trace is bright and sharp. Of course, it is not calibrated, the amplifiers for Y and X are not linear, the timebase for synchronisation is far from being a proper sawtooth. But most important, the power supply seems to be stable / solid.
Model: ES-500A, S#11616
Vintage: 1952
Purpose: General Purpose, TV Service
Condition: Working
Comments:
This oscilloscope was in the same hands since 1953, when it was originally purchased. Thanks to Jim Neal for allowing me to add it to the collection.
The unit appears to be in original condition except the power cord. The CRT is a 5CP1. Some potentiometers are difficult to move but work. The trace is bright and sharp. Of course, it is not calibrated, the amplifiers for Y and X are not linear, the timebase for synchronisation is far from being a proper sawtooth. But most important, the power supply seems to be stable / solid.
Documentation:
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