Mechanical Deep-Soil Sensor

A non-electronic, battery-free soil moisture sensor engineered for dependable measurement in deeper substrates. Its 12 cm probe allows insertion into pots over 20 cm deep or garden soil up to 10 cm down — reaching where roots actively draw water. Dimensions: 15 cm total length × 7 cm dial diameter × 3 cm depth; weight: 85 g. Housing is rigid, UV-stabilised plastic; probe is bare metal (no coating). The dial features ten linearly spaced numeric indicators (1–10) grouped into three colour-free, text-labelled moisture bands. Reading is instantaneous upon full probe insertion — no waiting, no settings. To preserve probe integrity, removal within 5 minutes is essential. Ideal for monitoring succulents, ferns, shrubs and vegetables across UK microclimates.