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Actions	Details Remove from selection Add to selection Title Statement of Work conducted on the double working circuit Reference UK0108 NAEST 020/033 Date 1872-11-20 Scope and Content Manuscript report on experiments conducted with double working circuit 236. Gives times when wire was occupied and clear, also total number of messages sent. Physical description Number of pieces: 1, Pages/folios: 2 Language English. Persons keyword Lumsden David Subject Telegraph equipment Conditions governing access Open Level of description file Hierarchy browser 110000001 NATIONAL ARCHIVE FOR ELECTRICAL SCIENCE AND TECHNOLOGY contains 322 parts UK0108 NAEST 020 Baker Collection: Papers of Sir William Henry Preece contains 213 parts UK0108 NAEST 020/033 Statement of Work conducted on the double working circuit

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Title
Statement of Work conducted on the double working circuit
Reference
UK0108 NAEST 020/033
Date
1872-11-20
Scope and Content
Manuscript report on experiments conducted with double working circuit 236. Gives times when wire was occupied and clear, also total number of messages sent.
Physical description
Number of pieces: 1, Pages/folios: 2
Language
English.
Persons keyword
Lumsden David
Subject
Telegraph equipment
Conditions governing access
Open
Level of description
file

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