Janus: Papers of Frank Dyson

RGO Archives/RGO 8 contains:
<-- See earlier
36	Correspondence on military service
37	Correspondence on the reversible transit circle
38	Correspondence on optical instruments
39	Correspondence on instruments
40	Correspondence on time-keepers
41	Correspondence on mirrors and micrometers
42	Correspondence on magnetic instruments
43	Correspondence on visitations
44	Correspondence on garden parties
45	Correspondence on the Annual Garden Party
46	Correspondence on Abinger Magnetic Observatory
See later -->

More information

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Papers of Frank Dyson

Title	Correspondence on mirrors and micrometers
Reference	RGO 8/41 (former reference: C7)
Covering Dates	1912–1931
Extent and Medium	1 bundle

Content and context

Correspondence relating to mirrors, micrometers and spectrophotometry, including the following material:

Correspondence with J. Cooke and Sons on a speculum mirror, 1912.

Correspondence with Troughton and Simms on a Duplex micrometer, 1910-1912.

Correspondence with the Cambridge Instrument Co. and the National Physical Laboratory on spectrophotometry, 1926-1930.

Correspondence concerning a new measuring micrometer for the Cookson Plates and a second micrometer, 1931.

Miscellaneous correspondence, 1929-1930, including letters on a prismatic astrolabe and on the sale of a transit instrument to the Helwan Observatory, Egypt.

Further information

Indexed

Index Terms

Optical Instruments

Troughton and Simms

Cambridge Instrument Company

National Physical Laboratory

Helwan Observatory, Egypt

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