MVUYO Thermometer Bimetal Stainless Steel Surface Pipe Clip-on Spring Temperature Gauge 0-120 Degree

Clip on spring pipe dial thermometer/ temperature gaugeFor connecting to outside of pipesStainless steel caseSpring for 20-60mm pipe diameterSuitable for hot water, hvac, heating, oil tanks, etcCold, warm, dry, and wet are very clear.Temperature and humidity date and time.