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