851

The Tektronix 851 is a multimeter. In addition to the usual multimeter functions, it can measure the timing of digital signals.

Tektronix 851
Multimeter Tektronix 851 Produced from 1978 to (?) Manuals Tektronix 851 Manual (PDF) Tekscope Vol. 10 No. 1, Feb 1978 discusses the 851 (All manuals in PDF format unless noted otherwise)

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