Charles Supper Co. Inc. has introduced a compact micropositioner that combines two arcs and an X-Y slide assembly for aligning lasers, fiber optics, laboratory and x-ray crystallography instruments. Dubbed the UltraPositioner, this device features 30° cross-axis arc travel and 0.25-in. total X-Y travel. The goniometric arc assemblies have mounting holes that accept a variety of mirrors and accessories. The fully adjustable UltraPositioner measures only 1.2 3 0.975 in. and has a lockable X-Y base.