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The Gauge Evaluation Procedure Task Force was formed by the Non-Hydraulic Hose Committee to develop a gauge evaluation procedure to be used when evaluating the capability of gauges used for hose measurement. The use of a standard method for gauge evaluation will help users easily compare equipment capability. The information provided in this recommendation is based on the methods used to produce the data presented in SAE J1759 and J2605.

The purpose of this SAE Recommended Practice is to provide dimensions for both standard and thin-wall hoses and to provide commercial and precision tolerances for SAE 20R3 and SAE 20R4 coolant system hoses.

The purpose of this SAE Recommended Practice is to provide dimensions for both standard and thin-wall hoses and to provide commercial and precision tolerances for SAE 20R3 and SAE 20R4 coolant system hoses.

The Measurement of Coolant Hose task group conducted a round-robin study to determine the measuring capability of automotive suppliers and users to measure Inside Diameter (ID), Outside Diameter (OD), Wall Thickness (Wall) and wall thickness variation of hose using traditional measuring devices and techniques. Seven companies (five suppliers and two end users) participated in this testing. Based upon the round-robin study this information report will detail procedures, test measuring devices, results and recommendations.