An anemometer is an instrument for measuring wind speed. This one, only about three inches high, is by Short and Mason of England, and was listed in the 1896 Chicago Laboratory Supply & Scale Co. catalogue at $30.00 and in the1929 Central Scientific Company catalogue at $88.00.

   The multiple-dial scale reads in units of feet per minute, and goes up to 100,00. The system is entirely mechanical, and relies on light aluminum vales and jewelled bearings to respond quickly to changes in air speed. The base is weighted to keep it from being blown over. 

   It is in the Greenslade Collection.