Verify & Mark Traverse Holes With Pinpoint Accuracy.
We reduced all the engineering formulations involved in duct traversal to a user friendly portable instrument that provides accuracy and repeatability.
The Fastest & Most Accurate Instrument to Change CFM Fan Speed.
Using Performing Instruments Pulley GPS you can navigate fan performance of a variable pitch pulley at all operating positions accurately in seconds.
Our Pulley GPS with a color-coded chart is your key to equipment performance and energy savings.
Using our Pulley GPS, you can reduce time due to premature belt failures, and do more in less time with precision and accuracy.
At Performing Instruments you will find a variety of products that transform complex mathematical models into user-friendly tools that save time and energy while enhancing uniformity and performance, all while conforming to ASHRAE and SMACNA standards.
Our Pulley Calculator can accurately predict airflow output in all operating positions within a variable pulley and fixed pulley. It can als...
Copyright © 2020 Performance Instruments 
