The "floating tremolo" was designed by Fender for the Fender Jazzmaster, and first appeared with the release of the Jazzmaster in 1958. A larger, heavier and more complex vibrato mechanism than the synchronized tremolo, and promoted over it by Fender as their premium "tremolo arm" mechanism, it never achieved the same popularity, though if properly set up according to Fender's recommendations, it held tune as well as or better than the synchronized tremolo unit. A major cause of the floating tremolo's increasingly poor reputation since its introduction is the far-increased availability and popularity of lighter guitar strings, which do not produce enough tension in standard tuning to compensate for the low break-angle over the bridge and, in the Jaguar's case, the exceptionally short scale length of 24 inches. This places relatively little downwards force on the bridge, making it unreliable in returning to the correct position after tremolo operation.