Operator controls lifting, lowering and neutral with one lever. Load may be held in any position. “Clarktor’’ Crane Special Note! Clark vehicles are gas-powered — therefore competent for 24 hour continuous service and just as potent the last hour as the first. Clark 24-hr. continuous service Ordinary 8-hr. service stoops to get through doorways A mobile crane of variable height and capacity, with a reach enabling it to tier 4000 Ibs. to 13 ft., yet, with boom horizontal, has an overall height of only 7ft.10in. A busy, lifting, carrying, tiering rig for dock and pier service, so compact that it passes through warehouse doorways easily. Built on the sturdy ‘‘Clarktor’’ chassis, this boom crane has dual rear tires, self-starter, generator and headlights. Drum handles 500 ft. of % in. cable, mak- ing, the outfit serviceable as a power winch. Ideal for handling bulky, heavy cargo that requires hooks or chains. Useful also in shipyards and machine shops. Write for new bulletin Ship operators, stevedoring organizations and shipbuilders will be interested in a new bulletin just issued, describing ‘“‘Clarktor’’ Boom Crane in detail. The Clark Tructractor Co.| As ADVERTISEMENT Battle Creek, Mich. to your inquiry MARINE REVIEw—January, 1931 59