Besides the usual screw-feed and lever-feed tailstocks, Stark, like many other makers of high-class watch-making equipment, offered a special "Three-spindle Tumble Tailstock". This unit was intended to be employed where two or three tools could be used in succession on light production work. The three spring-loaded spindles - all of the "light sliding type", 6 inches long and fitted with adjustable depth stops - were mounted in a swing frame, pivoted on studs mounted in the base plate; the frame was indexed into each of its three positions by a spring-loaded pawl. A later version of this unit, which differed in a number of significant ways, can be seen here.