Pocket Barometer and Compass compendium by Armstrongs Manchester.

A pocket barometer and Singers Patent compass with mother of pearl dial in a fitted case. The barometer is signed Armstrongs Manchester and is in good working order, but the compass will require attention as it doesn't spin and the transit lock pin pulls out completely. I believe there would have been a thermometer with the set originally but no longer present. Weighing just under 270 grams with the case measuring 150mm by 90mm. Please see photos for more details and condition.

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