115-AV is a Series 100 AV Durablock® air velocity gauge kit suitable for total pressures to 100psig (6.89bar), temperatures to 150°F (65.6°C). Complete air velocity kit includes Dwyer® inclined manometer, stainless steel Pitot tube (12˝), two 9´ lengths of rubber tubing with connectors, extra red gauge fluid, instruction card H-7, Bulletin H-11, magnetic mounting clips, air velocity calculator slide rule and carrying case. This gauge designed to measure air velocity, static pressure, vacuum or differential pressure. Series 100 gauges offer superb accuracy combined with portability. In Dwyer’s® Durablock® precision machined solid acrylic plastic construction, the wells and inclined bore are machined to tolerances of ±.0002˝.