Accuracy is a system result. The aligner, mounting hardware, lift, calibration, vehicle condition and technician procedure all contribute to the final reading.
The camera is only one part of the system.
Clamp movement can look like wheel movement.
Bay geometry and lift condition affect repeatability.
Verification is more useful than a single claimed number.
Accuracy and repeatability are different
Accuracy describes closeness to the correct value. Repeatability describes whether the system produces the same value under the same conditions. A useful workshop check examines both.
Control the complete measurement chain
Targets, clamps, camera frame, lift reference, runout compensation and vehicle condition must remain stable. One loose connection can create inconsistent results.
Use verification procedures
Repeat measurements, remount checks and calibration verification help isolate whether variation comes from the equipment, mounting or vehicle.
Accuracy verification checklist
- Targets and clamps inspected
- Lift and turn plates verified
- Runout procedure completed correctly
- Camera view clear
- Calibration status current
- Repeat measurement recorded
Accuracy troubleshooting questions
| Question | Why it matters | What to confirm |
|---|---|---|
| Do values repeat without moving the vehicle? | Separates stability from vehicle movement. | Target, clamp and camera stability. |
| Do values change after remounting? | Can reveal mounting repeatability. | Clamp seating and compensation procedure. |
| Is one bay different from another? | Can indicate installation or lift geometry. | Reference plane, lift levelness and camera position. |
Frequently asked questions
Does more cameras automatically mean more accuracy?
No. Camera quality, geometry, calibration, target visibility and software all matter.
Can a loose suspension part affect readings?
Yes. Vehicle looseness can allow wheel geometry to change during measurement or adjustment.
Should accuracy be checked with a known reference?
Yes. Follow the equipment manufacturer’s calibration and verification procedure.
Practical reference · Published 2026-07-17. Confirm final product configuration and local requirements before purchase or service.