jonathan

Such a bland, featureless desert out there...

They are for adjusting the latitude on the mount, I believe. Or maybe they are spare ones. Don't use them to move the mount, move the mount head to the correct latitude by hand first (it will be front-heavy, so be careful) then screw these in to lock it in position. Think of them as locking bolts and not adjusting bolts, as they have a reputation of bending easily if forced against a heavy mount.

Snug as a bug!

Big heavy lumps of metal!

This looks like a familiar set of boxes...