Universal Metal Spinning Company, Inc. – since 1963
Manufacturer of Aluminum Spheres for Radar Target Tracking & Calibration.
Calibration and Target Spheres Available in Dimensions from 3.187″ – 27.5″. Our Spheres are Hand Spun for the Lowest Weights Available.
Universal’s aluminum radar target spheres are constructed from two hand spun hemispheres. The hemispheres are jigged and welded into a compete sphere, then sanded and polished to a smooth spherical surface.
We define sphericity as the largest difference in diameters obtained when a large number diameter measurements are taken, i.e.,
sphericity = largest diameter minus smallest diameter.
We polish all of our radar calibration spheres to provide a consistent, smooth finish, providing the best performance for tracking and calibration of your systems.
Check out the specifications data table below for our standard sizes of Target Spheres.
|Class A Spheres|
|Stock #||Diameter (inches/cm)||Weight||Sphericity|
|003.187-A||3.187″/8.09 cm||5 oz.||.015″|
|004.75-A||4.75″/12.07 cm||6 oz.||.015″|
|005.42-A||5.42″/13.77 cm||7 oz.||.020″|
|006-A||6.00″/15.42 cm||8 oz.||.020″|
|008-A||8.00″/20.32 cm||21 oz.||.020″|
|010-A||10.00″/25.4 cm||23 oz.||.025″|
|012-A||12.00″/30.5 cm||32 oz.||.030″|
|014-A||14.00″/35.56 cm||44 oz.||.035″|
|020-A||20.00″/50.8 cm||112 oz.||.050″|
|025.125-A||25.125″63.8 cm||178 oz.||.100″|
|027.5-A||27.5″/69.9 cm||280 oz.||.100″|