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GM Instruments was formed in 1992 by Eric Greig to concentrate on the design and supply of specialist ENT (ORL) electronic instruments and accessories. The initial instrument range focussed on applications which required flow and pressure measurements but rapidly expanded into 3 product categories: Audiometry, Nasal Congestion measurements and Respiratory Flow measurements.

Innovation, prompted by PC development and interaction with medical people working in the field, led to the first versions of the ASRA (automatic self recording audiometer).


Nasal Measurement

Rhinomanometers, Acoustic Rhinometers and RhinoSpirometers



ASRA Classic Audiometer, ASRA Osicus Audiometer and Audiometer Accessories