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Brass hair hygrometer and mercury thermometer made in Switzerland...
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This forecaster, Patent No. 6276, consist of 3 rotating disks for...
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This is a large brass instrument 7 cm (2 ¾ inch) in diameter with...
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Rotating Vane Anemometer By Negretti & Zambra London. This is a...
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Rotating Vane Anemometer For Measuring Wind Force And Velocity...
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A Large Rotating Vane Anemometer For Measuring Wind Force And...
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This rare set was made by J. Lizars from Glasgow during the 19th...
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A unique table barometer (No. 26912) with hidden aneroid mechanism...
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A unique and rare brass weather forecaster made in London by Negretti...