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Amazon.com: DuraChoice 2-1/2" Oil Filled Vacuum Pressure Gauge, Water Oil Gas - Stainless Steel Case, Brass, 1/4" NPT, Lower Mount Connection -30HG/30PSI : Industrial & Scientific
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Ideal Vacuum | Bourdon Needle Dial Vacuum Pressure Gauge With 1/4 inch NPT Male, -30 inHg to 0 to 30 PSI, 70672076
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