Collection

Wiring Circuits. Business file.

PART OF:
Business correspondence and invoices
Made:
1977
part of archive:
Archival material relating to the firm of H.N. Irving & Son, instrument makers
maker:
H.N. Irving & Son

Contains Salt Bath wiring diagram drawing No. 258/33 and photocopy of salt bath . Letter from A. Wilkinson and sketch of replacement lens required.

Details

Extent:
1 folder
Identifier:
IRV/A/164
Access:
Open Access
copyright:
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