Parts in LDCad

[N. W. Perry]

ok so the shock i have made is wrong is there a way to measure from one point to another thanks

Yep, just select the parts you want to measure between, then right-click the selection and choose Selection->Selection Info. You can measure distances, angles, and some other stuff.

If you need to measure from a point that doesn't have anything to select (like a certain hole or stud in the part), you can add a temporary "helper part" and use that for the selection.

That same link Philo shared has an illustrated example of using Selection Info.