Topcon LS-B10 Mag Mount Receiver. Topcon boom mount rotary laser receiver. Compatible with conventional rotary lasers. Uses 4 AA Batteries (Not Included). This item is in the category "Business & Industrial\Test, Measurement & Inspection\Levels & Surveying Equipment\Levels & Autolevels\Rotary Lasers".The seller is "laserbuys" and is located in this country: US. This item can be shipped to United States.