Battery-Ringing Inter-Communication Wall Telephone for Metallic Lines, with
Hand Micro-Telephone No. 522 and Cord No. 2142.No. 768 shown
Battery-Ringing Inter-Communication Wall Telephone for Metallic Lines, with
Hand Micro-Telephone No. 522 and Cord No. 2142.
No. 768 shown
| Catalogue Number | 768 | 769 | 770 |
| Number of lines | 10 | 15 | 20 |
| Height in Inches | 16 | 16 | 16 |
| Width in Inches | 6.5 | 6.5 | 6.5 |
| Weight in lbs. | 4 | 4.2 | 4.6 |
Taken from the Ericsson Telephone Catalogue 1903
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