Grass Instruments SIU5B Stimulus Isolation Unit and CCU1A Constant Current Unit

GRASS Instruments Polygraph Low Level DC Pre-Amplifier 7P1G UNTESTED

GRASS Instruments Polygraph Low Level DC Pre-Amplifier 7P1FL UNTESTED

Quidel Sofia 2 Fluorescent Immunoassay Analyzer Unit Untested As Is!

Hudson Oxygen Regulator w/ Flowmeter Gauge Model 2625 Untested

GRASS Instruments Polygraph Low Level DC Pre-Amplifier 7P1F UNTESTED

GRASS Instruments Polygraph Low Level DC Pre-Amplifier 7P1D UNTESTED

Vintage Grass Instruments Model 8A5 (Untested)