This is a vintage Drafting Tool set by Noris with it's original case. There are 2 Compasses (one for lead and one for ink), 2 sets of dividers, a larger compass, two inking pens, a compass extension, a small bottle of spare parts, tools, etc.

The compasses have some surface rust (which can probably be easily removed with steel wool) and the Dividers have some greenish corrosion on them - again, probably easily removed.

I would guess this set dates to the 1950's.