India rubber world . arrangement is availa-ble, with small belts to con-2. nect the dial in almost any convenient position. When absolute accuracy is required, anadjustable device can be obtained in which the variable diam-eter of an expansion pulley makes accuracy possible. Figure4 shows the way in which such a device is attached to a cal-ender rolling machine. This device is used in many factorieswhere goods are sold by the piece without it is desir-able to measure above5000 yards at once. Tomeet this demand acounting register (Fig-ure 5) is attachable tomeasuring rolls
India rubber world . arrangement is availa-ble, with small belts to con-2. nect the dial in almost any convenient position. When absolute accuracy is required, anadjustable device can be obtained in which the variable diam-eter of an expansion pulley makes accuracy possible. Figure4 shows the way in which such a device is attached to a cal-ender rolling machine. This device is used in many factorieswhere goods are sold by the piece without it is desir-able to measure above5000 yards at once. Tomeet this demand acounting register (Fig-ure 5) is attachable tomeasuring rolls. Thisregister serves for meas-urements up to 100,000yards. Elastic fabrics are dif-ficult to measure exceptby special machines thatare fitted with adjust-able tension, two formsof which are shown in Figures 6 and 7. In the simpler formshown in Figure 6, the tension is regulated by friction collars keep the ends of the rolls even, and the machineis adjusted to wind upon boards from four to nine inches wide. 266 THE INDIA RUBBER WORLD [May 9°3 upon square bars, round rods or steel plates, which may bewithdrawn when the roll is finished. The driving pulleys areeight inches in diameter, with a 2-inch face, and can be run at about 250 revolutionsa minute, if register of measure-ment is on a dial sethorizontally at the sideof the machine and ope-rated by a worm on theshaft of the measuringroll. The standard sizesare two, for % and |goods. The former willtake fabrics up to 27inches in width, whilethe other serves fromthat width up to more elaborate
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