Can anyone recommend a thermometer for the greenhouse? Bit of a strange request may be as a thermometer is a thermometer but the last two I bought have had the mercury separate due to high temperatures (the greenhouse was then empty) so I need one that I can use all year round and won't explode in the Summer. Min / max feature required and don't mind if it digital, battery powered. Thanks.
I found one here www.thermometersdirect.co.uk - good to find a company that ships abroad without costing an arm and a leg.
Got mine from Wilkinsons – good price and has been fine these last 2 years – also they have a bit of a sale on for some gardening bits
I use the Digi ones.
Don't you just love the science in this write-up?? http://www.rankinsdirect.com.au/shop/GardeningEssentials/TenaxThermometer.aspx
you must have had an exceedingly hot greenhouse to knacker the thermometer.
However the way to repair separated mercury or alcohol thermometers is to heat them gently with a hairdryer or diy heatgun. You obviously have to be careful but when you've heated it enough to reconnect all the bits it should after cooling result in a functioning thermometer.
I've done this loads of times for laboratory thermometers.
Thanks, I did get a digi one in the end, waiting for it to arrive. Will try to fix the old one with the hair dryer though, good tip thanks. We had a really hot September when I was putting the greenhouse up and it must have gone well over 50 degrees inside as the mercury separated and the max indicator hasn't been seen since.
When my min/max thermometer mercury separated, I just shook it down violently until it went back together again! ::)
Mine was a goner - tried the suggestions above and no dice. Received this last week and so far so good http://www.thermometersdirect.co.uk/acatalog/Dual_Display_Hygrometer_Thermometer.html