ERICSSON
TELEPHONE No's MB 300 & MB 310
 

MB 300 consists of a Micro-telephone RE 9100, telescopic type, with Waterproof Cord RS 7010, 2 Magnet Generator, Magneto Bell, with 500 ohms, resistance, Dry Cell, press-button for short circuiting the Bell, and 2 Terminals for the line.

This instrument is protected by a leather case, with shoulder straps.

Weight (with Cell) 9lbs.

MB 310 is similar to the above, but is fitted with 5 Bar Generator and 2000 ohm. Bell.

Weight (with Cell) 13lbs.
 

Last revised: October 12, 2019