The Ruler Upgrade Kit enhances your ability to scan and protect your test charts by preventing the Eye-One device from coming in direct contact with the chart - thereby avoiding any possible smearing or scratching.
The ruler is usable as a standalone component or together with the backup board. The backup board provides an easy one-hand operation with a target clamp that holds substrates up to 3mm thick.
In addition, you'll also get a case to hold your Eye-One product and its accessories.