Leupold Mark 4 20-60x80 Spotting Scopes - TMRMark 4 20 60x80 Spotting Scopes TMR offer the extreme magnification range and optical excellence required for situations where seeing every detail is critical. Leupold's Index Matched Lens System is coupled with a light absorbing interior finish to suppress glare. The result is an extremely crisp and bright image. Leupold's efficient Folded Light Path (FLP) lens and mirror optical system allow the Mark 4 to deliver an effective optical path of a