Tube MicroscopeEschenbach's tube microscope is a micromagnifier with illumination, suitable for inspecting a wide range of surfaces such as metals, textiles, mineral, varnishes etc. Wide focusing range enables raised or depressed features (e. g. holes) to be examined in detail The wide adjustment range is even able to compensate for a high level of visual impairment Lens made of high quality silicate A high level of brightness is achieved as a result of the large