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

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

there’s no avoiding the rain in our day-to-day lives – especially in Great Britain

3/D/997/X is a unique 1 day hygrograph chart measuring 0-100% relative humidity between 9am-9am

Precision: ±2% to 50%

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