Tubular wick and thread

For discussion of any observing equipment, from Stevenson Screens and manual instruments to electronic weather stations

Tubular wick and thread

Postby Graham Webster » 2012 Sep 23, 19:26

Up until recently I have been using a threaded muslin drawstring bag on my mercury in glass wet-bulb thermometer. It seems they are no longer available. Instead, I purchased a pack of 25 tubular wicks and thread from Munro. The wicks are 12mm flat. The tubular wick is drawn 50mm up the stem and is tied here, above and below the bulb, according to the Observer's Handbook. The problem is the wicks are too short. I have a plastic Metspec screen and the distance between the wet-bulb and the inside floor is much greater than in the wooden screen I used to use. It means topping up my whiskey minature bottle (reservoir) on a daily basis.

I have come across an American supplier of wicks, http://www.wickstore.com/Departments/We ... -Wick.aspx
For £30 you can get about 40m of tubular 1/2inch wick and just cut to size.

What type of thread us required?
Graham Webster
Posts: 9
Joined: 2012 Sep 04, 17:11
Location: Baintown, Fife. 125m asl. Firth of Forth, 3km to south-east. Hill, 205m asl 1km to NNW.

Re: Tubular wick and thread

Postby Darren Rogers » 2012 Sep 23, 19:41

russell scientific - about £1 a per meter.
Darren Rogers
Maulds Meaburn
Cumbria (Half way between Shap and Appleby)

Darren Rogers
Posts: 145
Joined: 2011 Nov 27, 20:22
Location: Cumbria - half way between Shap and Appleby in the Eden valley

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