Title
A.l.s. to C H Kerry from W H Preece
Reference
UK0108 NAEST 020/068-070
Date
1873-05-29
Scope and Content
A.l.s. to Mr C H Kerry from W H Preece, referring to Kerry's experiments with a double relay. Preece is sending Kerry an example of his double relay, which had been tested unsuccessfully on the Bristol-London circuit. Gives detailed instructions for use. Includes diagrams, showing how the relay is used on a differential plan and on a linkage plan. With reply from Kerry, referring to the weekly report on duplex working sent to Preece. Includes suggested improvements to the relay.
Physical description
Number of pieces: 1, Pages/folios: 4
Language
English.
Persons keyword
Subject
Conditions governing access
Open
Level of description
file
