where can we purchase a marker ball to include in the radiographs for calibration

where can we purchase a marker ball to include in the radiographs for calibration?

Good day Dr Hyatt . Your regular Ortho implant supplier should be able to assist you, failing that an internet search for ‘radiographic marker’ will reveal your most convenient option. If you would like to purchase one of our vPOP marker cards , please contact support@vpop-pro.com . Kind regards