All the best /Klaus
Offered here is a Grass Instruments Model 7P1 Displacement Transducer in used, good working condition. Manufactured by Grass Medical Instruments (Quincy, Massachusetts, USA), a renowned name in medical and scientific instrumentation since 1935, this high-quality precision device comes in its original wooden case and includes accessory components as pictured.
Brand
Grass Medical Instruments (since 1935), Quincy, Mass., USA
Model
7P1 Displacement Transducer
Condition
Used, good working condition. Shows minor cosmetic wear from previous scientific or industrial use, but is fully intact and stored in its original fitted wood case, which contains all shown accessories.
Technical Specifications & Features
Model: 7P1 (clearly labeled on the transducer)
Output: Voltage-based displacement signal
Vintage, analog medical/lab instrument (see panel label for schematic and connection data)
Original Grass-branded fitted wood case with metal latch and foam inserts for protection
Suited for mechanical displacement measurements in laboratory, academic, or research settings
Collector’s item—excellent for display, restoration, or functional repurposing
Collector / Background Information
The Grass Model 7P1 is a rare and desirable piece for enthusiasts of vintage medical or scientific equipment, especially those who collect or restore mid-20th-century analog lab gear. Grass Instruments was a leader in the development of transducers and physiological measurement devices, and items like this are increasingly sought after for both historic and practical uses in education, hobby labs, and industrial settings.
