Turn the center knob on the Chelsea Shipstrike Barometer, 4 ½" with Mahogany Base so that the brass needle is over the black barometer needle. Come back in an hour or two and see whether the barometer is rising or falling. Precision Single Bellows Movement made in France to specifications. 2 Year Warranty. Normally ships in 2-4 weeks.

FREE Ground Shipping to U.S. APO, FPO.