The Millicarat 50 diamond scale features .001-ct. diamond resolution, self-checking calibration, stability indicator, and low-battery indicator. The unit measures 5 in. x 3 in. x 1 in. and runs on a 9V alkaline battery. Dendritics Inc., 223 Crescent St., Waltham, Mass. 02154; (800) 437-9993.

Version 4.0 of ArtCAM Pro software features interactive sculpting capabilities and 3-D ring design. Interactive sculpting gives designers and manufacturing jewelers the ability to perform complex styling tasks without expensive CAD software. Delcam International Inc., 3270 Electricity Dr., Windsor, Ontario, Canada N8W 5J1; (519) 974-8088, fax (519) 974-8170.

The Crown Jewel diamond spindle is a brushless, variable-speed, bidirectional diamond-polishing motor. The low-noise, low-vibration, single-phase 2.7-horsepower motor has a speed lock control and allows operators to punch in selected speed and direction on a keypad. Operators can accelerate or decelerate between 900 and 5,000 rpm. The Israeli manufacturer specializes in low-voltage DC brush and brushless motor design, used in Israel’s Merkava tank; the Arrow missile; scanners and color printers; and aeronautic, radar, and surveillance systems. Bental Industries Ltd., Kibbutz Merom Golan, D.N. North Golan 12436, Israel; (972-6) 6960199, fax (972-6) 6960187, www.bental.co.il.