The following description is taken from the 1969 Fender lovin' care catalogue
Careful design and outstanding playing characteristics of the Jazzmaster have made it one of the favourites of guitarists around the world.
It features a Floating Tremolo working in conjunction with a Floating Bridge for the smoothest possible action, returning to tuned pitch without variance. A "Trem-lok" stops the tremolo block permitting strings to be changed simultaneously or individually and also prevents detuning should one break during a performance.
The Floating Bridge consists of a master bridge adjustable to varying heights. . On it rest six individual bridges each adjustable for length and height, making possible accurate adjustments for perfect intonation and custom playing action. The "off-set" waist body design is another Fender first. This unique design places the player's arm so that considerably greater comfort is achieved.
Two extended range pickups are adjustable for string balance and offer variations from mellow and soft rhythm settings to high tension treble. A separate rhythm circuit enables the player to preset tone and volume in each circuit independently, permitting rapid changes without the need of further adjustments. Tones can be modified with the three-position switch in the lead circuit interacting the pickups and also by use of a separate tone control.
The truss-rod reinforced neck is a natural blonde maple; the rosewood fingerboard is bound and has inlaid position markers to make fretting easier and add to its overall beauty. All metal parts subject to wear are case hardened and heavily plated to retain their beauty after long use. Guitarists find the Jazzmaster offers excellent comfort, tone response and workmanship. . It is finished in Shaded Sunburst or in selected custom finishes. Necks may also be ordered in one size wider or a size narrower than standard at the nut. Left-hand models available by special order.
Standard neck width: 1 5/8" at nut; 1 ½" and 1 ¾" by special order.