HUGHES -BELL RARE TELEPHONES -MICROPHONES SET – Italy late 1800

HUGHES -BELL RARE TELEPHONES -MICROPHONES SET – Italy late 1800

Stock Number: 1

Sold

Dimensions

diameter microphones 15 Cm

Circa

1890

Country of manufacture

Other

Categories: Scientific, Early Technology, Physics & Chemistry, Communication, Engineering antiques

Description

Extraordinary set for scientific  lessons for the properties of the Hughes carbon microphone ( Italy late 1800) .

The set includes three large microphones (diam. 15 cm!)  Hughes carbon type , a Bell type telephone and three electrical connections. In the mahogany box a support can be mounted to position the microphones.

Signs of wear and original conditions.

Set rare and still unknown

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Dealer information

IT AEQUATORIUM

We are located in Northern Italy and we collect and restore for over thirty years antique scientific instruments. In 1996 it began our activities' about trade , buying and selling scientific and technical items and other art antiquities. We specialize in antique teaching , astronomical, and medical instrumets. In our website (under construction) www.aequatorium.com you can have a more comprehensive view of our field of activity '.

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