TEC-HRO screen is an innovative blinder. Advantages of TEC-HRO screen: TEC-HRO screen consists of plastic and has a long lifetime (instead of paper) It has the ISSF-norm of 30 x 100 mm; this you can see on the printed millimeter scale TEC-HRO screen has a hole with it it’s possible to mount not only on a headband. You can also mount it on the diopter. Additionally, you can use the small rings on TEC-HRO screen to measure the size of airgun ammunition group.
