On Monday, 30 October 2017 19:30:14 UTC, JohnD wrote:
"Desperate Dan" wrote in message

(Are mig thermometers still used?)

Aren't they 'gallium' in glass now, where 'gallium' or more correctly
'Gallistan' is apparently a eutectic alloy of Gallium with Tin and Indium.
Freezing point is -20C so less useful as a minimum thermometer.

Zeal alcohol (coloured red)in glass for dry and wet bulb, MetO BS692 alcohol in glass (clear) for all minima - screen, concrete, grass - same as always.
Vaisala electronic unit for max.
On radiation nights artificial turf is always higher, winter and summer.
Ken
Copley
Teesdale