Description Specifications Literature Accessories Description The TSI DP-Calc™ Micromanometer 5815 allows you to easily make HVAC pressure and duct velocity measurements. The DP-Calc 5815 is a simple to operate, hand held digital micromanometer for fast, accurate differential and static pressure measurements.Included Items InstrumentHard carrying case4 alkaline batteriesOperation and service manualCalibration certificate State of California Proposition 65 WARNINGCancer and Reproductive Harm - www.P65Warnings.ca.gov. Product Specifications Stage/Differential Pressure Range:-15 to +15 in. H20(-28.0 to +28.0mm Hg, -3735 to +3735 Pa) Accuracy:±1% of reading ±0.005 in. H20(±0.01 mm Hg. ±1 Pa) Resolution:0.001 in. H20 (0.1 Pa, 0.01 mm Hg) Velocity (Pitot Tube) Range:250 to 15,500 ft/min (1.27 to 78.7 m/s) Accuracy:±1.5% at 2,000 ft/min (10.16 m/s) Resolution: 1ft/min (0.1 m/s) Literature & Docs Accessories TSI Alnor Pitot Probe 12 in 634634000 $170.00 Was: Now: $153.00 Add To Cart View More TSI Alnor Pitot Probe 24 in 634634002 $205.00 Was: Now: $184.50 Add To Cart View More TSI Alnor Pitot Probe 18 in 634634001 $190.00 Was: Now: $171.00 Add To Cart View More TSI Alnor Static Pressure Probe 3002017 $35.00 Was: Now: $31.50 Add To Cart View More TSI Alnor Pitot Probe 36 in 634634003 $240.00 Was: Now: $216.00 In Stock Add To Cart View More TSI Alnor 8 ft Norprene Tubing 372000000 $20.00 Was: Now: $18.00 In Stock Add To Cart View More TSI Alnor Pitot Probe 60 in 634634005 $270.00 Was: Now: $243.00 Add To Cart View More TSI Alnor Telescoping Pitot Probe 8 in - 38 in 634634004 $350.00 Was: Now: $315.00 In Stock Add To Cart View More