I'm with you Rob. Many gauges come with a very fine capilliary tube. Some are long. There is no way to bleed the air out of them. The gauge is usually mounted higher than the other end and is not designed to be bled of air. Thick cold oil in the tube would have friction and be slow to move. However air would be instantaneous.
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Bluebell
Carrier Armoured O.P. No1 Mk3 W. T84991
Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6.
Dodge WC55. 37mm Gun Motor Carriage M6
Jeep Mb #135668
So many questions....
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