This positioning engraving block is designed for microscope work, allowing you to keep your workpiece centered in view as you rotate the ball. As you pull the lever and feel the block glide into place, the work stays framed crisply in the eyepieces while you cut, set, or engrave. Features Repositionable center of rotation so the work stays within the microscope field of view Lever-actuated sliding upper section for fast, repeatable centering adjustments Massive ball and base provide high stability and smooth rotational control Wide jaw opening and practical jaw height accommodate a variety of workpieces Jaw design and weight make it suitable for engraving, stone setting, and general holding tasks Rubber base supports the block at a comfortable working height while helping to resist movement on the bench Specifications Attribute Value Product Type Positioning engraving block (engraver's ball) Weight 42 lb (19.1 kg) Ball Diameter 7.1" (180 mm) Jaw Width 3.0" (76 mm) Jaw Height 1.8" (46 mm) Maximum Jaw Opening 3.5" (89 mm) Overall Height on Base 7.75" (197 mm) Center of Rotation Adjustable via release lever Brand GRS Notes The adjustable center of rotation makes this block particularly suitable for use under a microscope, where keeping the work centered in the field of view is critical. It also functions effectively as a general engraver's block or setter's ball for a wide range of bench tasks.
