Koyo KH-1500 is a standard-gauge knitting machine with 200 needles, 4.5 mm apart.

Koyo knitting machines are so rare that it is extremely hard to find any information on them. It is very likely that these machines were released for the Japanese markets only.

However, Koyo KH-1500 knitting machine is identical to the Corona CH-1500 knitting machine, on which there is a bit more information (all free) is available on the Internet (including a manual – just Google it).