Beginning with fixed landing gear in the early days of aircraft development, the correct alignment of the tire/wheel to the centerline of the aircraft has been critical. Fixed landing gear were the easiest to adjust as third party suppliers developed shims to be placed between the gear and the mounting point. However, the means to measure the gear alignment has been crude, utilizing carpenter’s square, duct tape, wooden blocks, etc. This equipment gets the gear close to proper alignment but is not accurate enough to optimize tire wear and reduce gear load. Some of these methods were developed by the home-built aircraft operators that had the desire to install the gear correctly but not the proper tools.