the UK and the United States. At the same time the Japanese knitting accessories supplier Clover was exporting a version of the 1980s Aero counter, with dark inner barrels and white numbers, to the same customer base, although at first they supplied a pink version to the UK, and a blue version to the United States. Jewellery type Commercial and home-crafted, beaded row counters appeared from 2000 until at least 2010. Some of these involved suspending jewellery from the needle and marking off beads as rows progressed. Stitch-marker row counters These tend to be on-needle barrel row counters which have been attached to stitch-marker rings. They are intended to be used with circular or double-pointed knitting needles. In the 21st century Prym has marketed a dedicated stitch-marker row counter, labelling it the Universal Rotally. Complex row counters In 1936 The MP Handy Guide to Knitting and Crochet was patented under number 813814 and manufactured in Britain as a pair of rectangular flat metal plates sandwiching a paper card marked with number lists, and sliders with markers to record current row number, increase, decrease and times. However the metal slides did not work smoothly and could get stuck. The gadget incorporated a small ruler and needle gauge. There is an example of this counter in the Victoria and Albert Museum. The paper instructions pasted on the back carried the following legend: "Rows: When knitting and suddenly called away, mark off the number of rows reached. Increase/decrease: For casting on, or casting off stitches. Times: To mark off the pattern when doing fancy knitting, etc. Measure: Very handy when tape measure is mislaid. Needle gauge: For correct sizes from 6 to 12." A paper card version of the MP Handy Guide was published with folded card sliders for the war effort under the auspices of the UK Ministry of Defence during World War II and was intended for use by people knitting gloves, socks and balaclavas for the troops. In the 1960s, The Aero Needles Group Plc of Redditch, England produced the Knitters Companion, a pocket version of the complex counter, consisting of a pierced bar of black plastic containing seven knurled, white, rotary, numbered discs whose numbers would appear through the piercings in the bar. As in the MP Handy Guide, the numbers were labelled Increase, Decrease, Rows and Times. It was supplied with a soft plastic case which was intended