● 300 mm = LEFT edge of yellow rectangle A on seatpost (vertical, where green laser passes). ● 300 mm = TOP edge of yellow rectangle B on top tube (horizontal, where green laser passes).
Both perpendicular to ground plane → axis-aligned scales (no 2×2 solve needed). Long references and crisp corners → high click precision.
After all 7 clicks you can drag any dot to refine — values update live.
Workflow02 · click sequence
step 0 / 7
Upload a side photo of the HORAI SIM to start.
Photo03 · click points
No image
Load a SIM screenshot with the laser cross visible at BB, head tube center and saddle.