This Mitutoyo Indicator Stand is designed to hold indicators by their stems. Features include... Bushing to hold 8mm stems Without bushing holds 3/8" stems Flat Anvil, 2.28" in Diameter 6.3" Tall Post 1.18" Diameter Post With Fine Adjustment Knob Please select Calibration Option from pull down menu. Standard Calibration Usually takes about 3-4 Weeks to ship from Mitutoyo. 5-Day Calibration Ships out within 1 Week after receipt of order. 1-Day Calibration Ships out in 1 Day after receipt of order. INCLUDES CERTIFICATE OF CALIBRATION TRACEABLE TO NIST. Mitutoyo now is offering their most popular gages with an ISO/IEC 17025 Accredited Certificate of Calibration that is traceable to NIST. These calibrations are performed at Mitutoyo America's A2LA Accredited Calibration Laboratory in Aurora, Illinois after receipt of order. The Open Date Put Into Service is to be filled out by the end user when the gage is first used.