It is one of the most solid knitting machines. You can not push needles in hold position on a Passap. You use the Pushers for that.
It is a V-bed machine.
It comes with a huge number of built in stitch patterns, just by carriage settings, needle selection, moving the needlebed position and so on.
Has a seperate punchcard device.
The best machine for ribbing and double knitting of any kind.
Newer models are made in the 1980’s ~Elspa