Fowler's Workshop Black Granite Stand is ideal for shop-floor use!Features:. Sturdy and compact with extreme stability. 6" xย 6" x 2" granite base. Positive lock screw. Fine adjustment knob for zero setting. Column height is 8". Accepts all lug-back indicators. This stand is maintenance free. Microscrew fingertip control. Flatness: .00005"*Indicator not included with stand.