TFA Small Hair Hygrometer Personalised Mount Board it rotates once every 12

it rotates once every 12 hours and 25 minutes to indicate both high and low tides

for example in a summerhouse

Based on a traditional design these non-adhesive thermograph charts are ideal for recording drums that have a clip to hold the chart in place

Precision: ±2% to 50%

the 2016 is a weather station with pressure data so it can be used as a digital barometer

TFA Small Hair Hygrometer Personalised Mount Board it rotates once every 12Description Features Specification Unlike the spiral hygrometer, which indicates correctly within a certain range of the humidity scale, the synthetic hair hygrometer can be adjusted in such a way that it indicates reliably over the total humidity scale. This small synthetic hair hygrometer is, for that very reason, a high precision instrument. This brass instrument is less than 3 inches in diameter making it ideal for permanent wall mounting in key