Features 
• Primary gas flow measurements, NIST traceable with accuracy of ±0.5% 
• Suitable for verifying vacuum and pressure pumps, rotameters, setting instrument panels, calibrating gas chromatographs, etc. 
• Wide choice of operating ranges 
• Completely field portable, rechargeable Ni-Cad battery powered provides up to 8 hours of use 
• One button control, auto shut off battery saver 
• Instant readout of flow rates 
• Not affected by temperature or humidity changes, accurate at any altitude 

All calibrators include AC adapter/charger, soap solution, dispenser bottle & operating manual.