Super spacer indexing in Hor.&Vert.position.The divisions in 2, ... ,8,12,24are permitted by nothched plate. F2,F2-6 super spacer have accessories:six mask plates, three 6-square spanner ... ,12,24Locating dia.of spindle mmΦ212Φ170Width of locating key mm16Matche chuckK31210AK3116724 divisions individul error25N.W.5233G.W.6039Case dimensions ...