Hemispherical tips - almost impossible to damage Air velocity calculator. Portable or stationary fixed mounting types. Direct reading velocity charts. Standard 5/16" diameter pitot tubes. Recommended for ducts 10" and larger in diameter. Plainly inscribed inch graduations on both sides show depth of insertion at a glance - this helps you find the exact center of any duct and make an accurate traverse quickly. Tubes comply with AMCA & ASHRAE specifications. Test-confirmed unity coefficients. Life-time construction of #304 stainless steel. Suitable for use in temperatures up to 1500°F. Accurate readings when tip is directed within 15° of air flow. Static connection extends 3-1/2" to serve as guide for directing tip. Swaged tip, silver soldered connections. Seven sizes from 8" to 60" long. Pocket-size 1/8" diameter pitot tubes. Recommended for ducts 4" and larger in diameter. Geometrically scaled down per AMCA code. Unity coefficient design. Springy, #304 stainless steel withstands flexing without damage. Resists temperatures up to 800°F. Extended static connection serves as a guide for directing tip into air stream. Suitable for permanent mounting and OEM applications. Four models - 6" or 12" lengths in standard or short tip styles