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ITHACO NF Preamplifier P-51A 3941 Autophase Lock-In Amplifier Not Tested For Sale

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ITHACO NF Preamplifier P-51A 3941 Autophase Lock-In Amplifier Not Tested:
$450.00

Been told that the unit works however I’m not able to fully tested. It does turn on.

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ITHACO NF 3961 Two Phase Lock-In Amplifier (S26-0)

$275.00

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ITHACO NF Preamplifier P-51A 3941 Autophase Lock-In Amplifier Not Tested

$450.00

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ITHACO NF 3961B Two Phase Lock-In Amplifier

$620.00

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