Pirani RC The Roller adjustment tool
Italian company Pirani RC now have a helpful tool called The Roller available. Designed to fit a wide range of drivers the small cylinder is simply slid over the tool tip and a combination of 8 markings and an air bubble helps to make exact 1/16th or 1/8th of a turn adjustments to toe and camber angle adjustment screws and pivot balls. At only 20mm diameter it is also very handy and easy to store.
Source: Pirani RC [piranirc.com]