BUNDLE INCLUDES: Dwyer 475-6-FM Handheld Digital Manometer, Rubber Latex Tubing (3/16 inch ID, 9 foot length) Wrist Lanyard, 9V Battery and Operating Instructions. The Dwyer 475-6-FM Handheld Digital Manometer features dual-range measurements, positive, negative, or differential pressures. Unit is compatible with air and natural gas. The rubber latex tubing has less tendency to kink in storage and occupies less space, making it the perfect choice for portable work. 3/16" ID, 9 length. A Standard 9 Volt Battery provides up to 100 Hours of operation. Dual push pads on the front of the panel control On-Off, Auto Zero, and Pressure Unit Selection. Dwyer 475-6-FM Specifications: Dual Range: (0-30.00 PSI (2.069 bar)) Accuracy: ±0.5% Full Scale, 60 to 78°F (15.6 to 25.6°C); ±1.5% Full Scale from 32 to 60°F and 78 to 104°F (0 to 15.6°C and 25.6 to 40°C). Pressure Hysteresis: ±0.1% of Full Scale. Temperature Limits: 0 to 140°F (-17.8 to 60°C). Compensated Temperature Limits: 32 to 104°F (0 to 40°C). Storage Temperature Limits: -4 to 176°F (-20 to 80°C). Display: 0.42" (10.6 mm) 4-digit LCD. Power Requirements: 9 V alkaline battery, installed non-functional, user replaceable. Weight: 10.8 oz. (306 g). Process Connections: Two barbed connections for use with 1/8" (3.18 mm) or 3/16" (4.76 mm) I.D. tubing. Service: Air and compatible combustible gases. Agency Approvals: CE, FM.