The Dwyer 160-48 Stainless Steel Pitot Tube is constructed from corrosion resistant stainless steel with permanently etched insertion depth graduations for a lifetime of service. The static pressure port is parallel to the sensing tube to allow quick, easy alignment of the tube with air flow. The 16048 has a probe insertion length of 48-5/8". A universal model fits the user supplied 3/4" schedule 40 pipe in any length.