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A.C. voltmeter

A.C. voltmeter

Jewell Electrical Instrument Company
1930-1960
A.C. voltmeter, 0-10, US Navy type

A.C. voltmeter, 0-10, US Navy type

General Electric Company
1945-1960
anechoic chamber sign

anechoic chamber sign

Electro-Acoustic Laboratory, Harvard University
mid 20th Century
anechoic chamber sign

anechoic chamber sign

Electro-Acoustic Laboratory, Harvard University
mid 20th Century
AT&T receiver

AT&T receiver

Western Electric Company
circa 1900
AT&T receiver

AT&T receiver

Western Electric Company
1895-1899
Audio instrument, amplifier. Rectangular, grey metal deivice with grate-like top with a silver strip down the center. Black dial, red and black buttons and switch.

Audio instrument, amplifier. Rectangular, grey metal deivice with grate-like top with a silver strip down the center. Black dial, red and black buttons and switch.

Radio Corporation of America
circa 1940
Bell #10 deskset ringer box

Bell #10 deskset ringer box

Western Electric Company
circa 1897
Bell #10 deskset ringer box

Bell #10 deskset ringer box

Western Electric Company
1897-1898
Bell transmitter

Bell transmitter

Western Electric Company
1898
B&H loudspeaker

B&H loudspeaker

Bell & Howell Company
circa 1940
BIRD CRAPPED BASE!

BIRD CRAPPED BASE!

Western Electric Company
1924
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