Adjustable 11mm/21mm Rail Mounted Bubble + 1" Scope Tube Bubble Level Combo.

• CNC machining ensures that the error of each tool is controlled at 0.002mm

Dimensions are as illustrated per manufacturer's claim. Furthermore they claim that these measurements are accurate to 0.002mm

CNC milled from aluminium and anodized. No crude milling marks on the finish of the product.

The machine screws are steel and likewise, magnetic. Threading them on too tight can strip the aluminium tapped holes out, so just watch out.

Scope bubble level for scopes with a 1"  tube. Simply mount this onto your scope tube using the supplied torx wrench. 

This level will help your rifle to shoot accurately to your hold-off points, assuming cross-winds are taken into consideration for.

Clamps on both sides, however, the inside diameter of this mount does not have soft padding. We also do not guarentee that the hole is perfectly circular. Please only use with a budget scope where accuracy is not of cardinal importance. On a note of installation - please make sure your scope is mounted upright on your rifle / that your vertical crosshair is perpendicular to the horizon. Once you're sure of this, then install this level. This way, the level will accurately indicate how much your vertical crosshair is canting / leaning, when you're not holding the rifle properly upright.