Zeiss™ D36 double lens pocket magnifier. The only inspection loupe for those who demand the best. The aplanatic achromatic design of the lens system provides you with a field of view which is practically free of distortion and chromatic aberrations right into the peripheral zones. Features the two lenses 3x and 6x, which can be combined to give 9x magnification. Lens Diameter 21mm. https://stores.ebay.co.uk/hswalsh/ - Visit our UK eBay store here.