

Thanks to Kathy Grason Ramon for providing the following:
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Time line data
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Historical facts
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Vintage catalogs
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Price lists
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Employee list

Behavioral instruments

Published 1960

Speech audiometer

Published 1969

Environmental

programmable relay

programable solid state

Computer controlled

Bekesy sweep freq. audiometer

1701 Manual

1701 automatic

Evoked potential sys

1702 audiometer

1703 industrial audiometer

Micro-processor controlled

1704 audiometer

1705 audiometer

Domestic prices

1707 portable

Noise primer

1715 audiometer

1722 middle-ear screener

Guide to tympanometry

1723 middle-ear analyzer

1710 audiometer

1716 audiometer

GSI 50 ABR

1733 middle-ear analyzer

Tympstar middle-ear analyzer

GSI 70

GSI 61 audiometer

GSI 38 autotymp

GSI 37 autotymp

GSI 17 portable

GSI 65 industrial audiometer

GSI 60 OAE