Vintage Grass Medical Instruments Force-Displacement Transducer FT10 4M73P3

Grass FT10C Force-Displacement Transducer w/ Case, Springs – USA Made

Grass Instruments FT10 Force-Displacement Transducer W/ Case & 2 RED Springs

Grass Force-Displacement Transducer FT03C, Grass Medical Instruments, In Case!

Grass Force-Displacement Transducer FT10D, Grass Medical Instruments, In Case!

GRASS MEDICAL INSTRUMENTS FORCE DISPLACEMENT TRANSDUCER FT03 in/wood Case #1

GRASS MEDICAL INSTRUMENTS FORCE DISPLACEMENT TRANSDUCER FT03 in/wood Case #2

GRASS INSTRUMENTS VOLUMETRIC PRESSURE TRANSDUCER PT5-B w/ WOODEN CASE