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Technical manual: Monarch 120 A
![Technical manual: Monarch 120 A](https://coimages.sciencemuseumgroup.org.uk/245/717/small_thumbnail_2015_0491__0002_.jpg)
![Technical manual: Monarch 120 A](https://coimages.sciencemuseumgroup.org.uk/245/716/small_thumbnail_2015_0491__0001_.jpg)
Technical manual: Monarch 120 A, B & Compact Call Connect System (software version 2) / Installation, Commissioning and Maintenance
Details
- Category:
- Archive
- Object Number:
- 2015-491
- Materials:
- metal (unknown), paper (fibre product) and plastic (unidentified)
- type:
- document
- credit:
- BT Heritage and Archives