📏 Take Your Measurements
1 Wheelchair Frame Diameter
Measure as accurately as possible; better accuracy means better clamping.
- Use digital calipers if available.
- Otherwise use a ruler or tape‑measure.
- Wrap non‑stretch string snugly around the tube once.
- Mark overlap and measure that length (the circumference).
- Convert to diameter using the calculator below.
2 Scooter Frame Diameter
This measurement can be more approximate. Calipers or a quick ruler check at the widest point does the job.
You’ll enter these numbers on the Generate Models tab next.
3 Convert circumference to diameter
Use this if you measured circumference with a string.
4 Fraction to decimal (inches)
Inputs on the next page need decimals, use this if your inches are in fractions.