About This Metal Polar Scope Adapter: The polar scope mount for the right-angle viewfinder adopts an all-metal construction and precise craftsmanship; which is sturdy enough to ensure long-lasting use Multi-Angle Adaptation: For the combination of the viewfinder and the polar scope adapter; the multiple selection design of 360° angle and right angle 90° at will is conducive to achieving polar alignment in a more comfortable posture, thereby liberating the waist and knees from fatigue Widely Compatibility: The polar scope adapter for the right-angle viewfinder is compatible with most polar scopes with a cylindrical eyepiece that has a height greater than 23.5 mm and a diameter ranging from 23.5 to 30 mm; it can also fit onto the polar finder of most common mounts Lens Construction: 9 elements in 5 groups with a high-quality roof prism; diopter adjustment is built-in with ± 4 for variations in eyesight; an included adapter is provided; this angle viewfinder can be mounted on numerous DSLR cameras 1x and 2.5x Magnification: Manually adjust the magnification between 1x and 2.5x; This enables you to access smaller details of the view and makes it easier for you to focus when doing macro shooting Overview Brand : Tydeux Model Name : SKU_TD_OTH19RA-3 Eye Piece Lens Description : Barlow Telescope Mount Description : Equatorial Mount Product Dimensions : 3.93"D x 3.73"W x 2.55"H Focus Type : Manual Focus Finderscope : Reflex Item Weight : 0.2 Kilograms Compatible Devices : DSLR Camera, Polar Scope Field Of View : 90 Degrees