Variant company name:

Copenhagen, Denmark  Search this

Company Name:

Electroacustic GmbH  Search this

Related companies:

ELAC ELECTROACUSTIC GmbH.  Search this

Notes content:

Spheroscope sound detector for determining the direction of the sound of aircraft in conjunction with the Orthognome calculating device for correcting the time lag and parallax between the sound detector and the searchlight and for determining the actual distance of the aircraft.

Includes:

Trade catalog

Black and white images

Physical description:

1 piece; 1 box

Language:

English

Type of material:

Trade catalogs

Trade literature

Place:

Kiel, Germany

Date:

1900s

Topic (Romaine term):

Sound recording and playback equipment (including phonographs; microphones; and phonograph records)  Search this

Scientific and optical instruments  Search this

Measuring; calculating and testing devices  Search this

Aviation (aircraft; balloons; etc.)  Search this

Topic:

Aeronautics  Search this

Airplanes  Search this

Airships  Search this

Audio equipment industry  Search this

Balloons  Search this

Calculators  Search this

Measuring instruments  Search this

Optical instruments  Search this

Phonograph  Search this

Scientific apparatus and instruments  Search this

Sound -- Recording and reproducing  Search this

Sound recording industry  Search this

Weighing instruments  Search this

Record ID:

SILNMAHTL_15108

Location:

Trade Literature at the American History Museum Library

Collection:

Smithsonian Libraries Trade Literature Collections

Data source:

Smithsonian Libraries

EDAN-URL:

edanmdm:SILNMAHTL_15108