Knife with illumination device and tape measure

A knife comprising:

• a casing including two casing halves, each said casing half having a substantially L-shape rail formed on an underside thereof;
• a blade mounted in the casing, the blade being slidable relative to the casing to a position in which an end of the blade is exposed for cutting;
• and
• an illumination device including a substantially U-shape outer wall having an intermediate portion, two T-shape beams being projected from the intermediate section of the outer U-shape wall, thereby defining two outer chambers and an inner chamber, each said T-shape beam including an inner shoulder section located in the inner chamber and an outer shoulder section located in an associated said outer chamber, an illumination means being mounted in the inner chamber, a slide lid being slidably mounted in the inner chamber to retain the illumination device in place, the slide lid being is in sliding contact with the inner shoulder sections of the T-shape beams, and each said rail of the casing being in sliding contact with the outer shoulder section of an associated said T-shape beam.

A knife comprising:

• a casing including two casing halves, one of the casing halves including a plurality of positioning recesses, at least one of the casing halves defining an elongate slot, each said casing half having a substantially L-shape rail formed on an underside thereof;
• a blade kit mounted in the casing, the blade kit including a blade, a blade holder for holding the blade, and a thumb piece extended beyond the casing for manual operation along the elongate slot, thereby moving the blade relative to the casing, the thumb piece including a positioning member and an engaging stem extended from the positioning member, the positioning member including a protrusion for releasably engaging with one of the positioning recesses of the casing, the blade holder including a fixing seat to which the engaging stem is slidably engaged such that the thumb piece is slidable in a vertical direction relative to the fixing seat to thereby allow the protrusion to be disengaged from the positioning recesses when the thumb piece is pushed, an elastic element being mounted around the engaging stem for biasing the protrusion to engage with said one of the positioning recesses of the casing;
• and
• an illumination device including a substantially U-shape outer wall having an intermediate portion, two T-shape beams being projected from the intermediate section of the outer U-shape wall, thereby defining two outer chambers and an inner chamber, each said T-shape beam including an inner shoulder section located in the inner chamber and an outer shoulder section located in an associated said outer chamber, an illumination means being mounted in the inner chamber, a slide lid being slidably mounted in the inner chamber to retain the illumination device in place, the slide lid being is in sliding contact with the inner shoulder sections of the T-shape beams, and each said rail of the casing being in sliding contact with the outer shoulder section of an associated said T-shape beam.