The National Aerospace Standard (NAS) is the only non-proprietary optical tooling standard that applies to positioning of laser sources and laser targets or sensors. It was developed in order to answer the question of how to mount laser sources and their targets.

While most laser alignment suppliers will provide their own proprietary mounting hardware, NAS provides universal mounting standards and is based on the components of the system fitting into precision 2.25” diameter bores.

NAS specifies a system consisting of a tooling sphere (a truncated 3.5” diameter sphere) with a 3-point cup mount. In the center of the sphere is a 2.25” diameter bore that houses the laser source or sensor. This design ensures that each sensor is in the exact center of the sphere and readings will still be precise even if the sensor is tipped slightly.


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