Abstract: A simple method for and apparatus for determining relative distance for two or more halls. The apparatus comprises two distinguishable pointers joined by a common axis that allows the pointers to rotate relative to each other. The mechanism also include means to allow the two pointers to be fixed relative to one another.

Abstract: An optics mounting device that can be used on a wide variety of firearms including revolvers and shotguns. The invention provides a mount that can be snapped on and snapped off firearms and provides an easy way to provide laser pointing aiming devices on existing weapons without resort to altering the weapons by use of drilling holes or other gunsmithing.

Abstract: A sight aid including a supplementary sight alignment indicator disposed between an ocular lens and a reticle along the optical axis of a scope for forming a composite image with the image of the sight alignment indicator and the target image being viewable together by the user by means of the ocular lens.

Abstract: A snap-on clamp adapted to be removably connected to a part, the clamp including a U-shaped housing encompassing a space, the housing including a peak at a first end, a pair of side walls, each side wall extending from the peak and terminating at an edge, the pair of side walls cooperatively form two edges which define a mouth disposed at a second end opposingly disposed from the first end, the pair of side walls configured to be resiliently securable to the part. The two edges includes engaging surfaces urged towards one another and are configured to be removably coupled to the part when the clamp is urged with the mouth towards the part; and further including at least one protrusion disposed on at least one of the engaging surfaces, the at least one protrusion is configured to be lodged in a slot of the part.

Abstract: An adaptor adapted to be removably connected to a part selected from the group consisting of a scope, a Picatinny rail, a Weaver rail and a projectile device, the adaptor including a U-shaped housing comprising a mouth defined by two edges at a first end, a second end disposed at an opposing end from the first end, an inner engaging surface extending from each of the two edges towards the second end within a space defined by an opening of the U-shaped housing, each of the inner engaging surfaces is resilient with respect to the housing and includes at least one profile such that when coupled together, the inner engaging surfaces form a pair of engaging surfaces to secure the adaptor to the part.

Abstract: A snap-on clamp adapted to be removably connected to a part, the clamp including a U-shaped housing encompassing a space, the housing including a peak at a first end, a pair of side walls, each side wall extending from the peak and terminating at an edge, the pair of side walls cooperatively form two edges which define a mouth disposed at a second end opposingly disposed from the first end, the pair of side walls configured to be resiliently securable to the part. The two edges includes engaging surfaces urged towards one another and are configured to be removably coupled to the part when the clamp is urged with the mouth towards the part; and further comprising at least one protrusion disposed on at least one of the engaging surfaces, the at least one protrusion is configured to be lodged in a slot of the part.

Abstract: A sight aid including a supplementary sight alignment indicator having a projection plane and a projection device adapted to project a supplementary sight alignment indicator and at least one reference point on the projection plane, the supplementary sight alignment indicator is axially-centered with respect to the sight alignment indicator and spaced apart therefrom on the optical axis for forming a composite image with the image of the sight alignment indicator, the target image being viewable together by the user by means of the ocular lens and the projection plane is disposed at a distance from the sight alignment indicator. An adaptor secures the supplementary sight alignment indicator to a portion of the projectile device or the housing.

Abstract: A sight aid including a supplementary sight alignment indicator having a projection plane and a projection device adapted to project a supplementary sight alignment indicator and at least one reference point on the projection plane, the supplementary sight alignment indicator is axially-centered with respect to the sight alignment indicator and spaced apart therefrom on the optical axis for forming a composite image with the image of the sight alignment indicator, the target image being viewable together by the user by means of the ocular lens and the projection plane is disposed at a distance from the sight alignment indicator. An adaptor secures the supplementary sight alignment indicator to a portion of the projectile device or the housing.

Abstract: A method of aligning a point of aim with a point of impact for a projectile device is disclosed. Using a superposition device coupled to the projectile device, at least three reference points are superposed within a first target area with at least three diverging beams of the superposition device. Positions for at least three of the reference points are noted. A projectile is shot from the projectile device at a second target area, while the positions of the at least three reference points are maintained, to create the point of impact. The point of aim for the projectile device is adjusted to correspond with the point of impact while the positions of the at least three reference points are maintained. A system for aligning a point of aim with a point of impact for a projectile device is also disclosed.

Abstract: A sight aid including a supplementary sight alignment indicator having a projection plane and a projection device adapted to project a supplementary sight alignment indicator on the projection plane, the supplementary sight alignment indicator is axially-centered with respect to the sight alignment indicator and spaced apart therefrom on the optical axis for forming a composite image with the image of the sight alignment indicator, the target image being viewable together by the user by means of the ocular lens and the projection plane is disposed at a distance from the sight alignment indicator. An adaptor secures the supplementary sight alignment indicator to a portion of the projectile device or the housing.

Abstract: Methods and systems for aligning a point of aim with a point of impact for a projectile device are disclosed. Using a superposition device coupled to the projectile device, at least one optical reference point is superposed within a first target area with at least one beam from the superposition device. A position of at least one of the optical reference points is noted. A projectile is expelled from the projectile device at a second target area, while the position of the at least one optical reference point is maintained, to create the point of impact. The point of aim for the projectile device is adjusted to align with the point of impact while the position of the at least one optical reference point is maintained.

Abstract: Methods and systems for aligning a point of aim with a point of impact for a projectile device are disclosed. Using a superposition device coupled to the projectile device, at least one optical reference point is superposed within a first target area. The point of impact is created on a second target area using a projectile expelled from the projectile device towards the second target area. The point of aim for the projectile device is aligned with the point of impact while the position of the at least one optical reference point is maintained. Parallax is eliminated (or minimized) by aligning a primary and a secondary sight alignment indicator with each other and with a common optical axis extending through a scope configured to be coupled with the projectile device.

Abstract: Methods and systems for aligning a point of aim with a point of impact for a projectile device are disclosed. Using a superposition device coupled to the projectile device, at least one optical reference point is superposed within a first target area with at least one beam from the superposition device. A position of at least one of the optical reference points is noted. A projectile is expelled from the projectile device at a second target area, while the position of the at least one optical reference point is maintained, to create the point of impact. The point of aim for the projectile device is adjusted to align with the point of impact while the position of the at least one optical reference point is maintained.

Abstract: An apparatus for supporting a firearm having a forestock and a stock, the apparatus including at least two supports, each having an upper end portion and a lower end portion that is opposingly disposed from the upper end portion. A first and second support is configured to be removably attached at their respective upper end portion to the forestock and stock, respectively, of the firearm. Further disclosed is a base including at least one support receiver configured for removably engaging one of the first or second support at its lower end portion. Upon firing the firearm, recoil occurs without restriction as the removably engaged support disengages from the at least one support receiver and the firearm is returnable to the position prior to the firing of the firearm.

Abstract: A sight aid including a supplementary sight alignment indicator having a projection plane and a projection device adapted to project a supplementary sight alignment indicator and at least one reference point on the projection plane, the supplementary sight alignment indicator is axially-centered with respect to the sight alignment indicator and spaced apart therefrom on the optical axis for forming a composite image with the image of the sight alignment indicator, the target image being viewable together by the user by means of the ocular lens and the projection plane is disposed at a distance from the sight alignment indicator. An adaptor secures the supplementary sight alignment indicator to a portion of the projectile device or the housing.

Abstract: A drain trap adaptor adapted to allow draining of a drain trap and retrieval of a material. The drain trap includes a first drain pipe having an entry portion and an exit portion, a second drain pipe extending from the exit portion and a bore disposed substantially at the exit portion. The drain trap adaptor includes a ball valve having an inlet end and an outlet end, wherein the inlet end is adapted to connect to the bore; and a container adapted to connect to the outlet end of the ball valve. The container is configured to receive the drainage trapped in the drain trap and the material at the bore upon opening of the ball valve such that the drain trap can be drained and the material can be retrieved.

Abstract: An apparatus for supporting a firearm having a forestock and a stock, the apparatus including at least two supports, each having an upper end portion and a lower end portion that is opposingly disposed from the upper end portion. A first and second support is configured to be removably attached at their respective upper end portion to the forestock and stock, respectively, of the firearm. Further disclosed is a base including at least one support receiver configured for removably engaging one of the first or second support at its lower end portion. Upon firing the firearm, recoil occurs without restriction as the removably engaged support disengages from the at least one support receiver and the firearm is returnable to the position prior to the firing of the firearm.

Abstract: Methods and systems for aligning a point of aim with a point of impact for a projectile device are disclosed. Using a superposition device coupled to the projectile device, at least one optical reference point is superposed within a first target area with at least one beam from the superposition device. A position of at least one of the optical reference points is noted. A projectile is expelled from the projectile device at a second target area, while the position of the at least one optical reference point is maintained, to create the point of impact. The point of aim for the projectile device is adjusted to align with the point of impact while the position of the at least one optical reference point is maintained.

Abstract: Methods and systems for aligning a point of aim with a point of impact for a projectile device are disclosed. Using a superposition device coupled to the projectile device, at least one optical reference point is superposed within a first target area. The point of impact is created on a second target area using a projectile expelled from the projectile device towards the second target area. The point of aim for the projectile device is aligned with the point of impact while the position of the at least one optical reference point is maintained. Parallax is eliminated (or minimized) by aligning a primary and a secondary sight alignment indicator with each other and with a common optical axis extending through a scope configured to be coupled with the projectile device.