Manual / Guide · n.d.
BSP 030-705-703 197- and 198-Type Switches, Contact Springs Requirements and Adjusting
Read the PDF ↗
Bell spring requirements for 197/198 switches.
- Author
- Bell System
- Year
- n.d.
- Type
- Manual / Guide
- Credit
- Telephone Collectors International (TCI) Library, telephonecollectors.info (retrieved via Internet Archive Wayback Machine)
← Back to the Reference Library
BSP 030-705-703 197- and 198-Type Switches, Contact Springs Requirements and Adjusting