Soil Moisture pH Light Analogue Tester

A self-contained, non-powered 3-in-1 soil diagnostic instrument for moisture, pH, and light intensity. Measures 18 cm in total length, with a 2 cm diameter stainless steel probe and lightweight ABS body weighing just 85 g. Built entirely without electronics, firmware, or replaceable parts — designed for indefinite reuse under UK field conditions. Moisture scale reflects volumetric water content approximation (0–10); pH scale covers horticulturally relevant range 3.5–9.0 with neutral point clearly marked; light scale corresponds to PAR-intensity proxies (0–10) validated against common UK plant light requirements (e.g., lettuce vs lavender). All dials feature anti-glare matte finish and bold, weather-resistant numbering. Use case tested across English, Scottish, and Welsh growing zones: effective in heavy clay (Cheshire), sandy loam (Kent), and acidic upland soils (Devon). Recommended for pre-planting checks, post-rainfall assessment, compost maturity evaluation, and seasonal soil health logging — especially valuable where access to electricity or smartphone connectivity is limited (e.g., remote allotments or historic walled gardens).