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Date Posted by Category User IP

2014-09-13 (UTC)

WB5JNC

Misc

184-156-221-37.dyn.centurytel.net

Linear Instruments model 4104 chart recorders

Small chart recorders, 1986 production date (the picture only shows one but I have two: they would be hard to tell apart from the picture.) From what I can find Linear Instruments was apparently acquired by Spectra-Physics around 1988. These unit were removed from industrial equipment which was taken out of service. A switch inside the front cover sets 100mV/1V sensitivity. There is no manual or other info, and the units are untested, so they are for "tinkering" (build a line voltage recorder for example?) or as a parts value.

Considering offers on one or both.

TNX/73, Al

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