A method and mechanism for visually inspecting both sides of components for a hard disk drive are disclosed. The radiation source projects a launch beam for impingement onto the object surface. The control system may reduce the speed of the vehicle responsive at least in part to a detection of a curve in the road ahead of the vehicle via processing by the image processor of image data captured by the imaging device. If the database object is inconsistent, a first pessimistic read is performed with an isolation level that does not guarantee consistency. Preferably, the accessory further includes a mounting plate slideably engagable in a rear slot of the slide, and the mounting elements are affixable to the mounting plate.