The local availability of needed publications is, from most users' point of view, probably the most appropriate measure of a library's effectiveness. Although immediate availability is the ideal, interlending offers a way to improve availability over time. With the goal of maximum availability in the shortest possible time, the interlending section of the Unisa Library has developed a number of performance measures to determine its effectiveness. The performance measures were instrumental in targeting problem areas which could contribute to a more effective service by technological and other means. Briefly describes the rationale behind the performance measures and the actual performance attained, as well as the factors contributing towards their improvement.
