1862 London Exhibition: Catalogue: Class VIII.: George Searby
From Graces Guide
1983. SEARBY, GEORGE, 2 Crown Court, Threadneedle Street.
Steam gauge.
SEARBY'S PATENT IMPROVED STEAM GAUGE (Mercurial).
The advantages of this gauge are its cheapness, durability, and safety. It is manufactured on the only principle on which a steam gauge can act with certainty, and its internal arrangements, unlike all mechanical gauges, are in no danger of getting out of order. It also acts as a safety valve. It has been approved by many of the first engineers in the Kingdom.