The Nexgen Optical Radiuscope is manufactured in the UK and available in a number of versions to suit individual requirements.
The operation of measuring the radius of curvature is achieved by using the Drysdale principle. Light from the target is reflected down the microscope to form an image on the surface of the lens (surface image). The display is zeroed and the stage is moved to find the Top Image (aerial image). The distance moved is the radius of the lens, IE 7.50mm = 45 dioptres.
Its main attributes are its ease of use, 45mm focusing travel, built in power supply, and special target resulting in superior optical performance.
Can be supplied in Monocular or Binocular, fitted with either analogue or digital gauges.