Brunson 521-B Spherical Adapter Box Levels This model telescope has adjustments

This model telescope has adjustments to maintain the line of sight straight throughout a focusing range of two inches to infinity

Heavy-duty concrete scriber designed for precise marking on concrete

The M-series stands are available in a short or tall version

25 inch OD poles)

A short line at the end of each sequence aids in position the target to previously established marks or a projected reticle pattern

Brunson 521-B Spherical Adapter Box Levels This model telescope has adjustmentsMounting flexibility is what you get with the 521 B spherical mount. It is compatible with any 2" alignment telescope or collimator, allowing you to position your telescope in the many orientations your application may require. The spherical mount also functions as a target holder for alignments requiring precision target fixtures. It has three radial setscrews at approximately 120 degree intervals, as well as three "axial" setscrews in a line along