What is recorded here
This grey commemorative plaque records: Frederick James Ritchie (1826 to 1906). Worked with Professor Charles Piazzi Smyth to set up the One o' Clock Gun & Time Ball system. The clockmaker lived in this house for 40 years. Recorded plaque organisation: One o' Clock Gun & Time Ball Association.
Frederick James Ritchie (1826-1906) was a clockmaker who collaborated with Professor Charles Piazzi Smyth to establish Edinburgh's One o' Clock Gun and Time Ball system, significantly contributing to timekeeping accuracy in the 19th century.
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Photo: gnomonic · CC BY 2.0