WWII Pendulum Anemometer by Daloz (Boxed Set) pocket map Pre-1850 John Hedley & John

Pre-1850 John Hedley & John Davis mining surveyors equipment

Primarily used by watchmakers

this vintage type M

Pristine late 19th century Leslie's Differential Thermometer

WWII Pendulum Anemometer by Daloz (Boxed Set) pocket map Pre-1850 John Hedley & JohnThis is a modern version of Robert Hooke's 1667 Pendulum Anemometer; a fascinating device that allows for precise pressure and windspeed measurements without need of electricity. Utilized during the Antarctic Division by civil engineers in WWII, this vintage type M. 1991 A aneroid barometer features a calibrated steel base and arms, with aluminum wind vane numbered 0 to 14, and hollowed brass ball. Complete in original box. Sourced from Madrid, Spain.