Vision Engineering Swift-Duo MONO Measuring Dynascope, 2 Lens Macro X2 & Macro X5 with LED Light with controller and Heidenhain DRO. Also features built in camera and RCA Video out and USB 1 Port for computer interface. Easily measure radius and diameter and inspect parts for flaws. See Images and please ask questions before purchasing. Owner used this in a sharpening shop to inspect edges and tips and doing micro solder repairs on circuitry.