Abstract: A marking device is provided for sawing apparatus having a sawing blade and a blade rack behind the sawing blade and supporting the sawing blade. The marking device comprises a fixing frame arranged on the blade rack, a marker arranged within the fixing frame and having a light source therein, a cylinder lens arranged on the fixing frame. A light emitted from the light source and passing through the cylinder lens forms a straight cutting indication line projecting on an article to be cut. The power of the marker and the trigger of the sawing blade can be simultaneously or independently turned on.

Abstract: A night laser sight comprises a maintube assembly including a first receiving space having a first beam outlet, and a second receiving space having a plurality of second beam outlets being integrated with the first receiving space; a front cover having a third beam outlet securing to a front of the first receiving space; a laser module disposed at a rear of the front cover; a light-emitting diode (“LED”) means disposed within the second receiving space; a plurality of batteries disposed at a rear of the laser module for providing an electric current to the laser module and the LED means; a switch means disposed in a rear of the plurality of batteries; and a switching controller disposed in a rear of the second receiving space.

Abstract: A large distributed cold-light pattern device comprises from front to back a transparent plate, a color excited layer, a plurality of cold-light units, a plurality of soft cables, a back plate, a cold-light control circuit board, at least a converter, and a power supply. The color excited layer is capable of transforming electromagnetic wavelengths. The color excited layer covers on the back of the thicker transparent plate having supporting function. The luminous surface of each cold-light unit is mounted at the desired place on the color excited layer and is linked with the color excited layer. Each soft cable is individually connected to the lead-out line terminal of each cold-light unit. The overlapping part of each cold-light unit and each soft cable is then laminated. The back plate is installed fixedly on the back of each cold-light unit.

Abstract: A laser pointer, which includes a box-like bottom cover shell holding a laser module and a battery cell. A top cover shell is covered on the bottom cover shell. The top cover shell has a spring strip, a first metal contact plate connected between the negative terminal of the laser module and the battery cell, a second metal contact plate connected to the positive terminal of the laser module, and a third metal contact plate fastened to the spring strip of the top cover shell at a bottom side and connected to the positive terminal of the battery cell. Wherein when the spring strip is pressed downwards, the third metal contact plate is forced into contact with the second metal contact plate, thereby causing the laser module to be turned on to emit a laser beam out of a laser firing hole at the top cover shell.