stringing and exceptional accuracy. This is the most common kind of stringing machine found in racquet sport shops. Reliable constant pull stringing machines usually cost $3,000 and more. This type of stringing machine is found at nearly all professional tournaments. There are two types of electronic tension mechanisms: constant pull and lock out. Constant pull, as the name suggests, pulls the string and continues pulling until the desired tension is reached. The tension mechanism will ensure the string tension remains correct at all times, making stringing more consistent and accurate, as string stretching is taking into account. Lock out electronic stringing machines are similar to crank machines as they will pull to the desired tension but no longer monitor any reduction in tension over time. Constant pull technology will therefore offer greater levels of string accuracy. Most electronic stringing machines will offer many time saving and comfort features that include single action clamp bases, string measurer, electronic brake, height adjustable stand and color touch-screen. The most recent stringing machines include an automatic turntable tilt function that turns at a small but noticeable angle when weaving the cross strings of a racquet. These features substantially reduce stress on the shoulders and back for a stringer. While affordable (sub £500) models offer a raft of productive features, the increased outlay and need for regular maintenance make it a harder investment to justify when getting started. References Tennis equipment Badminton equipment Squash (sport)