Soil Moisture Logger X168577 High back armchair featuring beech

High back armchair featuring beech legs

ideal for students and the hobbyist

All pieces 400mm sq

It is tuned to concert pitch so you can play along with 'Play your Ocarina' music books and CDs and with other musical instruments

red and yellow)

Soil Moisture Logger X168577 High back armchair featuring beechThis Edu Logger sensor is based on measuring the vacuum pressure in a tensiometer. A tensiometer is a closed tube with a special ceramic part in its end. The tensiometer is filled with water and put in the soil. If the soil is dry, water goes out by diffusion through the ceramic holes and vacuum pressure is created in the tensiometer. If the soil is wet, the vacuum in the tensiometer pulls water into the tensiometer and the vacuum decreases. This is