Singer 337, 338, 347, 348, 353, 354, 360 series, 1263, 1280, 2404, 3101, 3102, 3103, 3105, 4325, 6011, 6012, 6305, 6310, 6314, 6318, 7101,7108, 7174, 8502, 8505, 9502, 9505, 180XL cog type