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Actions	Details Remove from selection Add to selection Title Diagram of double acting system Reference UK0108 NAEST 020/072 Date 1873-05-21 Scope and Content Pen and ink diagram of double acting system, referred to in 020/071. Drawn on tracing paper. Shows a line connected to two relays, both of which are connected to a trough of liquid. Physical description Pages/folios: 1 Language English. Persons keyword Jarvis J R, Preece George Edward 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 020/072 Diagram of double acting system

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Title
Diagram of double acting system
Reference
UK0108 NAEST 020/072
Date
1873-05-21
Scope and Content
Pen and ink diagram of double acting system, referred to in 020/071. Drawn on tracing paper. Shows a line connected to two relays, both of which are connected to a trough of liquid.
Physical description
Pages/folios: 1
Language
English.
Persons keyword
Jarvis J R, Preece George Edward
Subject
Telegraph equipment
Conditions governing access
Open
Level of description
file

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