GOODLETTSVILLE, Tenn. (June 19, 2014) – Des-Case Corporation announced its recent purchase of the visual oil analysis product line of Houston, Texas-based ESCO, an oil sight glass and level monitor manufacturer, Copaltite distributor, and Dow Corning product distributor. Products acquired include ESCO's popular 3-D BullsEye Viewport, as well as its oil sight glasses, indicators, and oil level monitors.