This auction is for a Rotring A2 drafting machine . Ideal for technical drawings Has 1 aluminium side bar the the rule inserts into. Has a parallel straight edge with stop go mechanism. Also has an extra one with on ball bearing missing- still glides- see photo. 2 x drawing heads with 15 degree steps. There is a screw missing from the clamps , but I’m sure this could be easily replaced. Any questions please ask In original box .