Mitre box

A mitre box comprising a base, a saw holder assembly pivotally mounted for angular movement over the base, and locking means for locking the saw holder at a predetermined angular position over the base, first pivot means are provided on said base and second pivot means are provided on said saw holder assembly, said locking means comprises first locking mechanism on said saw holder assembly and second locking mechanism on said base, and first and second locking mechanism cooperating with each other to lock the saw holder assembly in place at said predetermined angular position, said second locking mechanism comprises a lock hold in said base and said first locking mechanism comprises a lock element insertable in said lock hole, said lock element comprises a lock rod reciprocally mounted on said saw holder assembly and removably insertable into said lock hole, said first pivot means comprises a base pivot bearing on said base and wherein said second pivot means comprises a pivot rod mounted on said saw holder assembly and insertable into said base pivot bearing, a saw holder pivot bearing extends from the saw holder assembly and wherein said pivot rod extends into said saw holder pivot bearing, said first locking mechanism comprises a lock bearing extending from the saw holder assembly and said lock rod is movably mounted in said lock bearing, a plurality of angular top grooves and a plurality of lock holes are provided in said base, each angular top groove being adjacent to lock hole and wherein said saw holder assembly is adapted to move over said angular top grooves, said saw holder assembly has spaces therein in order to receive a saw blade therewithin, said saw holder assembly is provided with rollers between which a saw blade is adapted to reciprocate, said saw holder assembly has a front leg and a rear leg and wherein said saw holder pivot bearing and said lock bearing are mounted on said front and rear legs, respectfully.