Locking mechanisms are provided for locking the position of a miter gauge assembly to a sliding table of a table saw. The mechanisms are biased to a locking position and this bias can provide a sensible indication that the lock has been engaged. The locking mechanisms are configured to engage the guide bar of the miter gauge assembly at different locations along the length of the guide bar, particularly by engaging a series of spaced apart engagement notches. The locking mechanism thus allows the miter gauge assembly to be locked at several positions along the length of the sliding table, from a fully inboard position to a position in which the miter gauge assembly projects beyond the end of the sliding table. The locking mechanism is provided in different embodiments with manually actuated components that can be push/pull, pivoting, rotating or sliding.
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