A Set Of Dental Scaling Instruments With Ebony Handles. This is a fine set of instruments for manual calculus debridement (scaling) made in England by The Dental Manufacturing Co. Ltd. The instruments were made with ebony handles, German silver ferrules and steel shafts. The set consists of Endodontic Explorers, Spreaders, Universal and Gracey curettes with right and left working ends. The ebony handles are light with large diameter (11 – 13 mm) and tapered hexagonal shape. Each instrument is engraved with the company’s logo.