Publisher's Synopsis
Excerpt from Report of the Director of the Royal Observatory, Hongkong, for the Year 1920
The registers are time-scaled electrically. An electro-magnet, operated by the hourly time signal, lifts the pens from the paper and clock work apparatus, adapted by Mr Evans in January, locks them until the 3rd minute when they are released and fall back on to the paper.
Sunshine Recorder. - In view of the interruption to the sunshine records caused by the Observatory wireless mast, a new sunshine recorder was obtained from Messrs J. Hicks and mounted on the south-west corner of the Main Building on January 6, 1921. Its records furnish the necessary corrections to those of the old instrument.
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