Founded by Louis Casella in the mid 19th Century, Louis Casella & Co were instrument makers to the Admiralty, the North American Government and the East India Company.
This pocket barometer is inscribed 'C.F. Casella & Co Ltd. LONDON - Compensated 9595' dating it to the first quarter of the 20th Century.
The clean silvered dial has a barometric scale ranging from 25 - 31 inches scale for altitudes up to 5000 feet, and includes a rotating bezel with a small trend marker to set the last measurement.
The brass case is in good dent free condition with a removable protective plate covering the adjustment screw on the underside (see photos).
A larger than usual example of a pocket barometer, it weighs just over 250 grams, measuring 73mm in diameter by 30mm in depth, not including the stem.
Although it does not come with the key, it sits in a fitted velvet lined mahogany case which measures 138mm x 105mm x 55mm and together weigh 520 grams.
In good working order, it passes the plastic bag test with the needle rising and falling under pressure as it should.
Please study the photos as they are part of the description, and I will be
happy to answer any questions if I can.
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Delivery cost.
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