The Wall Aneroid from W.A. Baum Is Built To Agree With Master Instruments Approved By The United States National Institute of Standards And Technology. This Unit Complies with ANSI / AAMI SP-9 For Accuracy And Performance (1% Full Scale ± 3 mm Hg). Its Unique High Contrast Scale And Red Pointer Increase Visibility And Reduce Parallax Error. The Manometer Is Manufactured With A Metal Mounting Bracket, High Impact ABS Plastic Housing, Precision Low-Friction Movement, And Twin Pre-Seasoned Diaphragm.
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