I've deleted an object and for some reason the measurement path effects have stayed in place. They are un-selectable and cannot be deleted. Any ideas?

Maybe on a locked layer? Can they be selected with the node tool?

Cannot be selected with node tool. When I open the view layers window there's one layer. When I close the eye one measurement and all other objects disappear but one measurement Remains. Not locked

I'd open the Objects dialog and select all in the workspace. The Objects dialog should show which objects are not selected.

Yep thanks. Was able to make all visible and unlock which allowed me to delete them. Thanks again.