DIAMETER GAUGE
Our Performing Instruments Diameter Gauge is uniquely designed to help you read pulley diameter with precision and accurately predict replacement pulley.
$195.00
HOOD COVER
Ditch the cardboard with our simple Performing Instruments Hood Cover that fits any standard hood funnel.
$150.00
PULLEY GPS
This dual-mode Pulley GPS by Performing Instruments measures pulley operating position (pitch diameter). It also helps you effortlessly determine the airflow at each operating position.
$495.00
FLOW HOOD FUNNEL
Our Performing Instruments Flow Hood Funnel skirts are available in four colors. Crafted from durable and lightweight fabric, they offer a customizable plain surface for your own artistic designs or text. Â Â Â Â Â Â Â Â Â
$195.00
AUTO DUCT TRAVERSE
Performing Instruments Bring to you, The fastest and most accurate way to measure airflow in ducts. Â Â Â Â Â Â Â Â Â Â
$795.00
T RULE
With no calculation required, our Performing Instruments T-Rule offers you the fastest and most accurate means of marking and verifying traverse points on ducts.   Â
$150.00
Performing Instruments: Products Overview
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.
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Air Locking Gaskets
$150.00 -
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Auto Duct & T-Rule
$895.00 -
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Reflective Jacket (Dozen)
$216.00 -
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Flow Hood Funnel & Cover Bundle
$295.00 -
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Pulley & Diameter Bundle
$620.00
Customers Review
The auto duct traverse has made measuring airflow so much simpler. This tool allows us to take fast, accurate readings without doing multiple setups or calculations. It’s clear that this tool was designed with field technicians in mind.
Lucas Stone
This commissioning rule has simplified duct traverse marking more than I thought possible. We’ve tested it on various ducts, and it’s always accurate. Our team appreciates that it’s fast and requires no extra math skills to use, making it a perfect tool to bring along on any job.
William Graham
I’m really impressed with how the pulley calculator instantly recommends the correct belt size and optimal pulley position. Just by entering the readings from the diameter gauge and Pulley GPS, we get accurate results in seconds! It’s a fantastic tool that’s made our work much more efficient—truly awesome!
Emmanuel Wollaton
"I'm so glad I found the Pulley Diameter Gauge. It's made a significant difference in reading pulley diameter. It's stylish, durable, and performs flawlessly by accurately predicting airflow from one pulley to another in seconds. I'm truly impressed."
Oliver Smith
I love the Hood Cover. It's comfortable on my capture hood funnel, stylish, and incredibly affordable. I've received countless compliments on it.
Emils Davis
I'm blown away by the quality of this product. It's worth every penny. I've recommended it to all my friends at TAB_M