hi i have a speedwell vac gauge iv had a few of these in the past but this one has a movable red needle ? is this something spech cant seem to upload pics but iv stuck it on ebay if anyone fancies a look
thanks
speedwell
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Re: speedwell
Most of the later Speedwell Gauges had moveable red lines. Useful for oil & water temp. Can't imagine why you would need / want one on a vacuum gauge though.