MacDowall's single pin escapement for a pendulum clock

An elegant and novel escapement replicated in LEGO Technic parts.

From the YouTube description:

This escapement is described in Lord Grimthorpe's book "A rudimentary treatise on clocks, watches and bells for public purposes". It has been reinvented many times, but it appears that Macdowall had the most success with it, by paying close attention to its proportions.

Feeling ambitious? Here's a slew of LEGO Technic kits.

[ Thanks Dave!]

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