What are Wedge Prisms?

Wedge Prisms are optical elements or windows that are internal to the laser tool.  The straight laser beam passes through these wedge prisms on its path out of the laser tool.  A laser beam will pass right through a normal window with parallel sides but a wedge prism has one side ground and polished at an angle.  This causes the laser beam to refract or bend slightly.  If two wedge prisms are used in tandem and rotated independently but simultaneously, the laser beam can be moved in a circle or positioned precisely anywhere within the circle.  The diameter of the circle is determined by the wedge prism window angles and the two wedge prism angles are additive.  This means that the laser beam can be adjusted to be straight with the bottom of a laser level and centered from left to right of the sides of the laser too.  This method of calibration does not involve any mechanical adjustments like set screws and is inherently stable.  A jar, drop or hit from any of the 6 cardinal directions will not invoke a rotation of the wedge prisms.  Therefore, the laser tool is considered to be calibrated for life!

The method used to adjust the two wedge prisms is still a trade secret but the results are unsurpassed.  Laser Tool’s product use and longevity is an industry standard.  Warranty and repair costs for calibration are non-existent when measured over a 30-year period and taking into the account of over 100,000 laser tools having been sold worldwide in all industries and applications.