Boxwood Proof or Slide Rule by BUSS
A boxwood proof or slide rule by BUSS of London, circa 1865 - 1911
Thomas Odempsey BUSS are listed as Sykes hydrometer, saccharometer and steam salinator manufacturers to the Admiralty, Customs and H.M.Dockyards.
Marked 'BUSS MAKER 33 HATTON GARDEN LONDON' on one edge.
One end of the slide and rule are both marked '3'.
Clear and legible scales throughout.
Small chip to one end of the slide.
13/8 inches wide by 87/8 inches overall length.
A nice example.