Studio SK313 knitting machine appeared on the market in 1970. It is a standard-gauge knitting machine with 200 needles, 4.5 mm apart. It is identical to the Silver SK313 model, on which I already wrote a detailed article; thus, refer to it while enjoying the pictures below.
Studio SK313 has a very pretty green color scheme. Even the row counter has a green tripper. Cute!
One interesting feature of Studio SK313, similar to Silver SK313, and unlike most Silver/Silver Reed/Studio/Singer machines with patterning drums, Studio SK313 does not have rubber end rails but metal ones.
It seems like there are at least two variations of Studio SK313 in color and embellishments (see pictures below).









