Does anyone know which way Burris measures the height for the XTR Signature rings? The 34mm version is available in "High" 1.0" and "Extra High" 1.5". Does that measurement indicate top of rail to underside of tube or top of rail to center of tube?
https://www.burrisoptics.com/mounting-systems/rings/xtr-signature-rings
https://www.burrisoptics.com/mounting-systems/rings/xtr-signature-rings




















































