Starrett VB400 Benchtop Optical Comparator, 400 mm Screen, 250 mm x-Travel, 150 mm Y-Travel, 90 kg Load

The Starrett VB400 benchtop optical comparator is an optical measurement instrument featuring a 16-inch (400mm) diameter screen, typically equipped with a precision angular measuring scale offering 1-minute resolution. The instrument provides a standard workstage travel range of 10 inches (250mm) in the x-axis and 6 inches (150mm) in the y-axis, complemented by 2 inches (50mm) of focus travel. Positional measurement is achieved through linear encoders, delivering a resolution of 0.00005 inches (0.001mm). Illumination options include both profile (diascopic) and surface (episcopic) lighting, commonly utilizing halogen sources. The system operates on a 120 VAC, 1-phase power supply. Available magnification lenses typically include 10x, 20x, 25x, 31.25x, 50x, 62.5x, and 100x. The robust workstage is designed to accommodate a load capacity of up to 200 lbs (90 kg).