Abstract: A laser marker including a laser marker body to hold a battery power supply and a control circuit, a laser module pivotably connected to the laser marker body and controlled by a push-button switch of the control circuit board to emit a laser beam, a set of laser firing caps alternatively mounted on the laser module to refract the laser beam by a respective plano-convex length of different focal length for marking a line of light on a workpiece for guiding a cutting tool to cut the workpiece. The laser module can be turned on laser marker body around the X-axis; the laser firing cap can be turned on the laser module around the Y-axis.

Abstract: An adjustable laser sight fastened to a gun and controlled to lase a laser beam through a laser module for aiding the eyes in lining up the gun on its objective. The laser sight includes a laser module adjustably retained in a taper hole inside a housing by two adjusting screws and two supporting springs, which are disposed in the form of a cross. The laser module is adjusted elevation by turning one adjusting screw inwards or outwards and adjusted windage by turning the other adjusting screw inwards or outwards.

Abstract: A laser pointer is disclosed consisted of a laser module, a housing, a toggle switch, a push button ballpoint pen, a battery set, and a rotary cap, wherein the housing has chambers to hold the laser module, the battery set and the push button ballpoint pen, and a clip for hanging; the toggle switch has a press rod controlled by a button to press a leaf spring on a PC board so as to electrically connect the battery set to the laser module in causing the laser module to emit a laser beam for pointing to things.

Abstract: A laser indicator includes a top shell covered on a bottom shell, which is fastened to the visor of a golf player's cap, through doweled and hooked joints to hold a laser module, a control circuit board and a battery power supply. The laser module has a laser firing lens mount pivotably fastened to the top and bottom shell at the front and is controlled to project a laser beam on the golf ball to be hit by the golf player, in helping the golf player take the correct hitting position.