8" x 8" Granite Check w. Fine adjustment, comparator stand # 906-8 Go to amazon.com Related posts Top 15 best indicator stand granite 2022 Feature8x8x2" granite check w. fine adjustment 8" column Accepts all A.G.D. indicators Flatness 0.00005" Description8x8x2" granite check w. fine adjustment 8" column Accepts all A.G.D. indicators Flatness 0.00005"