Creedmoor Sports Comparator Stand Upgrade Kit If you have bought the Bullet Comparator and Shoulder Datum tool then this kit is for you. This kit will get you dialing in those Comparative Base to Ogive and Comparative Base to Shoulder Datum measurements quickly and without fuss. This free's up your calipers for other important measurements and saves you from having to break out the calculator and find the difference between two, three or four consecutive measurements. Kit Includes: Comparator Stand Dial Indicator Bullet Comparator Bar Shoulder Datum Bar Please note that you must have already purchased the Shoulder Datum Tool and the Bullet Comparator tool, this kit does not include the Shoulder Datum Tool or the Bullet Comparator tool just the necessary components to adapt those tools for use with the Granite Comparator Stand.