The Baro-Thermograph is a similar instrument to the Barograph, with the addition of a Thermograph, which acts independently to the Barograph on the same chart, but in a different coloured ink. This addition makes it a most interesting instrument, which enables one to record the rise and fall of the Thermometer during the week, as well as that of the Barometer. Oak, Walnut or Mahogany, with Bevelled Plate Glass Cover, and supply of charts for one year, as illustration. Price £6 15 0
Bracket to match either of the above £1 1 0
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WATCH-SIZE ANEROID BAROMETERS.
No. J O 6149. Watch-size Aneroid, in Gilt Case, Enamel Dial, in Leather-covered snap Case, 20/0
No. J O 6152.
Pocket Aneroid, compensated movement, with altitude scale, transparent Compass in lid, 37/6
No. J O 6151. Watch Aneroid, with Silvered Metal Dial, Altitude Scale 8,000 or 10,000 feet, compensated, 33/0
Silver Case, ditto, 62/6