Ref. : 531 248
Production Date : unknown (circa 80’s)
A very nice and much complete set. It come in the classic Rotring brown box and contains a compass, a drop-bow compass, an extension arm and a spare point. The compass mechanism is very smooth and can be adjust precisely with the dedicated ring or faster with the bush-buttons on the arms. It can draw circle from 0.5mm to 165mm, and goes up to 290mm with the extension arm. The drop-bow compass range is from 0.15mm to 11mm. All compass are very well built, comes heavy and got a very fine chrome plating. If you’ve got more info on this set (ref. / production date), please let me know!