iGAGING professional precision measuring tool iGAGING 8" high stainless steel stands with rack and pinion design allows Super high accuracy comparison measurements. Features:

• serrated working surface provides a stable and accurate reference base working area: 3-1/4 inch x 3-1/4 inch (85mm x 85mm).
• polished chrome Column with rack and pinion adjustment for fine measurements
• accepts all electronic and dial indicator with 3/8 inch mounting.    
• The reference base has Grade A flatness.