Tektronix 507 Oscilloscope
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$3200 (1969-Ltd Dmd)
$4300 (1973-Ltd Dmd)
The Tektronix Type 507 is a specialized oscilloscope designed primarily for high-voltage surge testing of power transformers, high-voltage insulators, lightning arrestors, etc. Careful design of circuitry grounding points ensures minimum sensitivity to extraneous disturbances caused by large voltage transients often introduced into the grounding system.