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Observation by Bill Barton: Dipleidoscope (Dent Patent Meridian Inst...

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Bill Barton


Bill Barton


2019 Oct 08 - 07:25


2019 Oct 08 - 07:25




Dipleidoscope (Dent Patent Meridian Instrument)

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Designed to be easier to use than a transit telescope for determining time these instruments first appeared in 1843 and were still being made in the 1870’s.

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Len Entwisle
Len Entwisle, 2019 Oct 08 - 11:38 UTC

On Googling to expand my historical knowledge I found this set of notes and illustrations by your good self .  Thanks for posting.

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