471 Interval Timer
The Model 471 Interval Timer contained two built-in time base generators to provide control of "ON" and "OFF" intervals of a Model 829...
Earphone cushions
The model 001 earphone cushion was a semi-plastic circumaural cushion of soft vinylite filled with viscous wax which molded via body heat...
The GS 162-4 speaker system
With the introduction of the Biflex principle - the problem of obtaining full frequency reproduction from a single-cone loudspeaker was...
Model 162
This Grason Stadler model 162 Speech Audiometer recently appeared on eBay. It was one of the last few production runs for this...
Snap leads
In the early 50's snap leads, available in varied lengths, connected relay behavioral equipment together. Experimental contingencies were...
Audiometric headsets
In the 60's GS used the telephonics TDH-49 10 ohm earphone as a transducer because it had a better frequency response in the higher...
Solid State Instruments
The 1200 series solid state behavioral research system consisted of the 1208 power supply, the 1201 module case, plus the signal...
Group hearing aids
The model 260 was introduced in 1951, a group hearing aid used in schools for the hearing impaired. In 1962 it was redesigned as the 260B...
Power supplies
The E783D was a heavy duty power supply capable of handling the requirements of 6 or more experimental set-ups. It was rack mountable and...
The 1701 Audiometer
In 1969 Grason-Stadler introduced the 1701 audiometer. It was the company's first combination pure tone/speech audiometer and would...
