11/20MM Infrared Distance Meter Profeional Rangefinder Portable Infrared Collimator Digital Ruler Measure Device Test ToolFeatures:*1. 100% brand new: You can get a 100% brand new laser rangefinder.*2. Powerful usage: The laser rangefinder is powerful with the super clear and extra bright laser beam.*3. Easy to use: Windage and elevation can be adjusted with included wrenches.*4. Good material: The laser rangefinder is made of metal. Metal housing is compact, lightweight, and durable.Description:*1. Tube diameter: About 17mm/0.67in*2. Length: About 57mm/2.24in*3. Tube size: About 48mm x 17mm/1.89 x 0.67in*4. Laser range: 50-100 Meter*5. Laser wavelength: 835-655mm*6. Mount size: Can adjust to 20mm or 11mmPackage includes:1 * Laser rangefinder+Base2 * Wrenche3 * Button cell