Telequipment Serviscope Minor Vintage CRT Oscilloscope These were made between the 60s and 70s for educational purposes. I have been using this one for a few years for various low voltage projects and it still works well. The original manual can be downloaded from here - https://docs.ampnuts.ru/eevblog.docs/Telequipment/Telequipment__Servicescope_minor_Operator_Manual-TELEQUIPMENT_SERVISCOPE_MINOR_SERVICE_AND_OPERATING.pdf
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