Dropped my Equus 3220 hand held vacuum guage and it now reads 5" Hg instead of zero.
Does anyone know how to adjust the guage back to zero?
I don't see an adjusting screw on the outside.
A search of the Internet brought up the owner's manual which says nothing about adjusting.
Thanks.
Does anyone know how to adjust the guage back to zero?
I don't see an adjusting screw on the outside.
A search of the Internet brought up the owner's manual which says nothing about adjusting.
Thanks.
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