Gehmann Magnified .177 Scoring Gauge All plugs meet ISSF rules regarding diameter Magnification assists the marker with easier judgement Outward scoring is available for air rifle and air pistol and the inner ten gauge for air pistol only Sprung handle avoid tearing shot holes Magnified 132for .177/4.5mm inward 133for .22l.r./5.5mm inward 133P32for .32 inward 133P38for .38 inward 133P45for .45 inward 132NLGoutward - for air rifle outword 132NLPoutward - for air pistol outward Without magnifier: 135for .177/4.5mm inward 136-22for .22l.r./5.5mm inward 136-32for .32 inward 136-38for .38 inward 136-45for .45 inward 135NLGoutward - for air rifle outward 134NLPoutward - for air pistol outward 134LP-ITair pistol - inner 10 inward