The remarkable P111 Precision Barometer is rated +/- 1.5 millibar (or
0.05 inches) over its entire measuring scale. This accuracy is unheard-of
for an instrument in this price range.
The 6" diameter lacquered brass case houses a precision temperature-compensated
movement, and the special knife-edge pointer minimizes parallax error when taking readings.
Our most serious barometer in this price range.
Range: 27.50" to 31.50", 931 to 1067 mb.