Overview
Inertia X1 is a precision instrument designed to measure the Swingweight of tennis racquets simply and accurately.
The system is based on a solid mechanical structure: a steel-core base for stability, three adjustable feet for leveling, and a pivoting support on ball bearings to eliminate friction. The racket, securely attached to the support with a Velcro strap, becomes a pure torsional pendulum.
The heart of the system? It’s already in your hands
The Inertia X1 app uses your smartphone's gyroscopic sensors to turn it into theinstrument's central unit.Detects movement, analyses the oscillation period and automatically calculates the swingweight (*).
The mechanics guide the movement.
The smartphone measures, interprets, and converts it into reliable data.
The result is a precision of up to ± 0.3 Kg·cm²(**)
With the Inertia X1 you can:
- Level and calibrate the instrument using the included certified samples.
- Measure swingweight in just a few seconds.
- Measure the twistweight of your racket (find out how)
- Store and compare data for all your frames.
(*)Check your smartphone requirements to work with Inertia X1
(**)This accuracy was achieved in our laboratory tests under specific conditions. Consult the instrument manual and FAQ section for more information.
How it works
Get started in seconds.
- Scan the QR code on the basis to access the web app, already configured for your device with the instrument serial number and calibration sample values.
- Check the levelling and calibrate the system by placing the certified samples on the cradle.
- Measurement fix the racket, start the swing and get the real data.
Read the smartphone requirements for the correct operation of Inertia X1
Download the Inertia X1 user manual
Precision, certified for each instrument
Each Inertia X1 tool undergoes an individual testing session: 10 consecutive measurements on the same sample, analysed by the Inertia X1 Diagnostic Lab diagnostic software. Typical results show a standard deviation of 0.13 kg·cm² — less than a tenth of a point. Enough to detect with absolute certainty any significant difference between one racket and another.
The instrument will only be shipped if all parameters are within the specified limits. The test certificate with complete data is delivered with the instrument – not as a formality, but as concrete proof of what you have purchased.
The declared repeatability of ±0.3 kg·cm² is not a theoretical figure: it is the conservative value verified on each individual unit.
Why you need it
Inertia X1 is the ideal tool for those who aren't satisfied with the manufacturer's stated specs:
- For the Perfect Matching: Two rackets that are identical on paper are never the same on the court.Inertia X1detects manufacturing variances (often exceeding 5-7 Swingweight points), allowing you to match frames with surgical precision. Switch from your primary to your backup racket without feeling any difference in timing or power.
- For the Serious Customizer: Static weight and balance only tell part of the story; inertia is what you actually feel during the swing. Whether you are adding lead tape or silicone, Inertia X1 allows you to measure the exact increase in power and stability. Stop guessing: quantify every added gram in terms of realMoment of Inertia.real.
- For the Specialized Retailer: Transform your shop into a center of excellence.Inertia X1You can offer your clients a professional customisation service and guide them in choosing a new frame based on solid data, not just on feel. Help them find the perfect racket by comparing the real inertia of models being tested, or guarantee the purchase of a perfectly matched pair of frames. It is the compact and reliable tool to set yourself apart from mass retailers and build loyalty with the most discerning tennis players.
Choose Inertia X1
Inertia X1 is a complete system for measuring swingweight, designed to offer professional precision in a compact and accessible format.
It is available at the price of €269.00, excluding shipping costs.
What you will receive:
- the Inertia X1 instrument, calibrated, individually tested and ready for use
- The calibration tool with certified samples.
- Access to the web app via QR code, pre-configured for your device.
- The individual test certificate with the data from the 10 test measurements
Order now your Inertia X1
Estimated shipping: 5 business days