Jack stands

[Tuomas]

I'll recommend a favorite addition for such jackstands [other than ratcheting type]. One more hole at adjacent or opposite face [female tube] offset by half the spacing used in the sliding tube. Just the ticket for instances calling for only a little higher or lower, not a full step, and neither component is weakened by excess holes.

Yep. Those half steps can be usefull sometimes.
It wouldn't be bad idea to add "half step" between every hole.