Improved life time. Pinion lift. Range of fine vertical adjustment 15cms. close mesh 10 speed gear box, Gear ratios 1:2 No. backlash. Instantaneous start at all speeds with built in vibration free, noiseless motor, speed variation from 1 rev. in 25 min. to I rev in II hours. Permissible paper length 2.5 meters, adjustable along machined 120 cm Bed; Automatic paper tensioning devices, Flat writing surface attachment 3 jointed arm uprights with fine tangential adjustment, Auxiliary cylinder with fine tilt adjustment to permit equalisation of tension at the top & bottom of the paper, Neutralisation clutch for immediate start & stop, centralised electrical points for respiration pump, time clock and operation table, mounted on heavy metal platform with castora, with manometer & two way time marker.