B. and J. Hall and Co: Difference between revisions
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Ordoverax printing process | Ordoverax printing process | ||
1907 Description and illustration of an instrument, which they describe as a micrometer gauge, for accurate setting of dividers for marking off dimensions, based on a metal disc engraved with a spiral of 1/20" pitch <ref>[[Engineeering 1907/06/14 p.794 | 1907 Description and illustration of an instrument, which they describe as a micrometer gauge, for accurate setting of dividers for marking off dimensions, based on a metal disc engraved with a spiral of 1/20" pitch <ref>[[Engineeering 1907/06/14]] p.794</ref> | ||
== See Also == | == See Also == | ||
Revision as of 19:28, 20 March 2023
of 39 Victoria Street, Westminster
Ordoverax printing process
1907 Description and illustration of an instrument, which they describe as a micrometer gauge, for accurate setting of dividers for marking off dimensions, based on a metal disc engraved with a spiral of 1/20" pitch [1]
See Also
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Sources of Information
- ↑ Engineeering 1907/06/14 p.794