Warm Threads - Natural Fibers and Yarns, Spinning and Felting Supplies :: Yarn Gauge/Weights

i'm toying with the rather ambitious idea of spinning yarn for a jumper for madam (although not as ambitious as planning to knit it myself - nanny's volunteered for that). i'm really not convinced that i'm up to spinning around 400g anything like consistently but it seems like a challenging next step.

if we don't use one of nanny's existing patterns i quite like the look of childhood from knitty. it looks like it's a worsted weight yarn (what on earth is the uk equivalent?), roughly 11 wpi, 250g of the body colour, 150g for the stripes.