PEAK TS1999 Telecentric Measuring Loupe, 7X Magnification, 0.04"-0.12" Lens Diameter, 0.94" Field View, 3 Lens Optical System

PEAK's magnifying optical system of this loupe is "telecentric", meaning it is characterized by a small opening fixed at the focal point of the lens system, through which you can measure the length or width of not only flat objects, but three dimensional ones, such as small spheres or cylinders without the error caused by parallax. Equivalent in principle to expensive profile projectors. Adjustable aperture opening. High precision optical quality achromatic lens system with focusing from +2 to -2 diopters gives you a needle-sharp, brilliant image from edge to edge. Comes complete with measuring reticle, protective carrying case, and lens cleaning cloth. Fully coated for color corrected viewing. 360 degree clear acrylic base admits light from all directions. Smooth helicoid twist focus mechanism comparable to those used on high quality camera lenses. Dual inch/metric interchangeable glass scales. Power: 7X. Lens diameter: 0.04-0.12" (1-3mm). Field of view: 0.94" (24mm). Optical system: 3 lens. Scale division: 0.005" (.1mm). Scale diameter: 26mm. Measuring range: 0.8"(20mm). Measures 1-1/2" diameter by 2-115/128" height.