US Optics Anti Cant Device

Discussion in 'Long Range Scopes and Other Optics' started by BML, Nov 29, 2012.

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  1. BML

    BML Well-Known Member

    Oct 31, 2009
    I'm wondering if anyone has this specific level on their rifle

    U.S. Optics Anti-Cant Device Picatinny Weaver Style Bases Swivel Matte

    I have a really low scope and I need a measurement from the flat portion that sits on the rail to the lowest point of the curvature directly above.

    I already have the B Square level and it will not fit. I'd like to know what kind if clearance this USO level will have before I drop the $80+ to order it. I really don't want to go with the ring style level.

    If anyone could get me that measurement I would greatly appreciate it.

    Thank you!

  2. Hired Gun

    Hired Gun Well-Known Member

    Apr 21, 2003
    I use and endorse the Holland scope mounted level. Rail mounted levels are rarely level without shimming them.
  3. bruce_ventura

    bruce_ventura Well-Known Member

    May 22, 2011
    Hired Gun is right. For long range rifles, the reticle or elevation turret axis should be aligned to the rifle bore, not the rail. The anti-cant indicator should be attached the scope tube, not the rail. Attaching it to the scope tube allows it to be rotated so that it is level when the reticle is level.