Monarch Instrument Fiberscopes provide superior image quality and flexibility to allow for quick inspection of enclosed areas. Save time and money preventing unnecessary disassembly of complex machines. Available in two models: FSI with internal LED light and FSX with external light, each with a variety of lengths and diameters. Features include an integrated focus ring for continuous adjustment, high impact ABS construction for water and chemical resistance, high density plastic fiber-optic bundle for superior image quality.