Check the listing for details. Dwyer 477B-1 Handheld Digital Manometer 0-20 in. w.c.. Condition: New. Listed at 485.47 USD. Subscribe to Our NewsletterDwyer 477B-1 Handheld Digital Manometer 0-20 in. w.c. Brand:DwyerModel No:477B-1Our Model No:477B1 Product OverviewFeaturesRange: 0 to 20in w.c. (0 to 4.982 kPa)Accuracy: �0.10% of full scale from 60 to 78F� (15.6 to 25.6�C); �1% of full scale from 32 to 60 and 78 to 104�F (0 to 15 .6 and 25.6 to 40�C)Service: Air and compatible gasesPressure Hysteresis: �0.1% of full scalePressure Limits: 3 psigTemperature Limits: 0 to 140�F (-17.8 to 60�C)Storage Temperature Limits: -4 to 176�F (-20 to 80�C)Housing: AluminumDisplay: 4-digit LCD (.425in H x .234in W digits)Power Requirements: 9 volt alkaline battery. Battery included but not connectedConnections: Two barbed connections for use with 1/8in (3.18 mm) or 3/16in (4.76 mm) I.D. tubingWeight: 10.2 oz (289 g)Agency Approvals: CE40 readings in internal memory reduces time to record dataApplications:Lab calibration of other pressure instrumentsAir velocity/air flow measurements in commercial buildingsLaboratory readingsDescription The Dwyer 477B1 Handheld Digital Manometer 0-20 in w.c. is a versatile, hand-held, battery operated manometer in the range of 0-20 in w.c. This model measures either positive, negative or differential pressures with �0.10% of full scale accuracy. The user can select from up to seven common English and metric pressure units. A memory function allows storage of up to 40 readings for later recall and a display backlight provides auxiliary lighting for hard-to-see locations. Also standard are a hold feature, visual and audible overpressure alarms and an aluminum housing to protect the instrument against damage.Included Components1 - 9V alkaline batteryTerms & ConditionsPlease note estimated delivery time above. Contact us for details or if you have a delivery requirement. We ask for your patience while striving to ensure your shipment arrives quickly and accurately.Domestic ShippingFREE Standard Shipping on items OVER $75 and less than 30lbs to continental U.S. Add $36 for AK, HI, or PR. Please contact us for shipping rates to any overseas US territories including: Northern Mariana Islands, Guam, Puerto Rico, U.S. Virgin Islands and American Samoa.PO Boxes/APOs require USPS shipping and may therefore experience longer lead times6.25% Sales Tax for shipping to MAInternational ShippingDue to international voltage requirements, please ask us prior to purchasing to confirm your product will operate correctly in your country.Please contact us for shipping rates to any overseas U.S. territories.International customers are responsible for all shipping charges, including any duties or taxes.