Aspiration and impact sensing probes are offered in standard and custom lengths. Aspiration configured probes have a straight cut tip that opens parallel to the air flow stream. An impact, or “total pressure”, configured probe has an angle cut tip that opens directly into the air flow stream for pressure applications, and away from it for vacuum applications. Either type of probe, at any length, is available with a choice of straight slip on connector or tri-barbed slip on connector. These connectors accept flexible tubing.