The Grooved Pegboard is a manipulative dexterity test consisting of 25 holes with randomly positioned slots. Pegs with a key along one side must be rotated to match the hole before they can be inserted. This test requires more complex visual-motor coordination than most pegboard tests. Some common uses are student labs, screening procedures in industry and evaluating lateralized brain damage. The pegs are conveniently stored under the nameplate.
See the Purdue Pegboard as well