Nice aluminum stock reference & charts advertising card NB PRODUCTS * New Britain, PA - Pennsylvania Rectangular aluminum card measures approx. 6-3/8" x 3". Plumbing supplies, industrial, air test equipment, manhole meter pressure hose, pipe stoppers, v-notch weirs. Has: Ruler, Low Pressure testing, Allowable Time Table, Exfiltration, Loss in Gallons/24 hrs, Head in Feet Reduced to Pounds Per Sq.
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