This Max-min Mercury Free Thermometer Records The Maximum & Minimum Temperature Achieved During A Period In Both Clear & Easy To Read C & F, Allowing You To Accurately Monitor Greenhouse Conditions & Both Ends Of The Temperature Scale.the 21cm Tall By 5.5cm Wide Greenhouse Thermometer Comes Complete With A Screw Fixing Point (screw Not Supplied) & Two Markers Will Clearly Show How Warm Or Cold Conditions Have Been. The Max-min Thermometer Will Also Record The Current Temperature & A Quick Press Of The Central Reset Button Will Bring The Markers Instantly Back Into Position. With A Temperature Scale Of -30c To 50c, The Greenhouse Max-min Mercury Free Thermometer Is Your Complete Greenhouse Temperature Data Bank!max-min Mercury Free Thermometer Measures 21cm H X 5.5cm W X 3cm Dtemperature Scale From -30c To 50c (-20f To 120f)mercury Freefixing Hole At Top (fixings Not Supplied)essential Greenhouse Growing Aidclear, Simple To Read Displaymarkers Record Maximum & Minimum Temperatures Over A Periodcurrent Temperature Also Displayedreset Button Returns Markers To Current Temperature Statusideal For Monitoring Potentially Damaging Overnight Greenhouse Temperatures During Early Season Growinggives An Indication Of High Summer Temperatures
- Helps With Planning Venting & Shading