Key Information
Reference code
K/PP107/11/1/5
Title
ABC Telegraph transmitter, [1840-1850]
Date(s)
- [1840 - 1850] (Creation)
Level of description
Item
Extent
1 item
Scope and content
ABC transmitting telegraphs designed by Wheatstone using a step by step mechanism. The dial is rotated to the required character which operates ‘make and break’ contacts beneath the dial sending current impulses down the line to the receiver. [See K/PP107/1/4/42]. Brass dial mechanism with 30 arms each marked with letters and numbers radiating from a brass plate attached to a mahogany base.