The Spectra Optical Comparator is an affordable precision comparator. Bright images and interchangable lenses make the system versatile and easy to use. Floor and Bench Models High Contrast 14"Screen Bright Images 10X to 100X Quick-Change Lenses All Metal Design High Resolution, Long Focal Length Lenses 12" x 6" x 3" Travel Available with Edge Detection Available with InSpec Metrology Software