1) Your design
Four-bar ground pivots (mm), same global frame as the coupler data
Dyad ground pivot O′ (mm)
The six link lengths (mm)
Where is P on link 2?
Offset is optional: the angle (deg) of AP away from the line AB. Leave at 0 for P on the line AB.
2) Given data (set by your professor, read-only)
Coupler positions (mm)
Operator zone
Gates
Tolerances: mm accepted on lengths and toggle distances, deg on the stroke ends. Rounded coordinates need a little slack.
Fill in your design and press Verify.