This is a Telequipment D75 oscilloscope, a dual-trace laboratory instrument designed for general-purpose electronic waveform analysis, featuring delayed sweep capabilities for more detailed signal examination. Telequipment, a subsidiary of Tektronix, produced these as more affordable but capable alternatives to high-end Tektronix models. Circa 1970s.

W38 x D46 x H14 cm.

Untested.