Turn-knob machines allow mechanical needle selection (pushing them forward), which is determined by a combination of the various turn knobs. These are wonderful machines and easy to learn. All the mechanical features of these machines is what make them survive for such long times (they were made in the 1960s).
The list below reflects only models where the pushbuttons are needle beds, not on the carriages.
To the best of my knowledge, turn-knob machines were only made with the standard gauge (needles are 4.5 mm apart). Thus, all machines below are standard-gauge.
Corona Temic CH-501, turn-knobs on the carriage
Corona CH-707, turn-knobs on the carriage
Corona CH-1000, turn-knobs on the carriage
Corona CH1500, turn-knobs on the carriage
Corona CH-1600, turn-knobs on the carriage
Corona CH-1700, turn-knobs on the carriage
Corona CH-1800, turn-knobs on the carriage
Genie CH-1500, turn knobs on the carriage
Genie CH-1800, turn knobs on the carriage
Janome CH-1800, turn-knob on the carriage
Koyo KH-777, standard, turn-knobs on the carriage
Koyo KH-1500, standard, turn-knobs on the carriage
Koyo CH-1800, standard, turn-knobs on the carriage
Toyota K 109
Toyota K 111
Toyota K505
Toyota K506
If you are new to machine knitting on flatbed machines and you just got a machine, consider the beginner-friendly projects I recommend to all my students and customers. These projects can be done on any machine with any gauge.