The SP-250 is a unique microscope. Plan objectives, Kohler quartz halogen illumination. Large mechanical stage and fully adjustable substage condenser - excellent optical performance. In addition the SP-250 has a CCTV camera fitted into its head which allows parfocal direct microscope viewing and monitor/computer imaging at the same time. The base of the microscope has direct USB to computer output and analogue image output for TV/monitor display.computer. All necessary cabling supplied.