Multi-Function: Designed for Reflector telescope; fit for standard 1.25 inch diameter; this sturdy laser unit allows to swiftly and precisely collimate Newtonian telescope; accurate collimation in a few minutes provide more clearer image;
High-Quality and Durable: High-quality metal construction and anodizing aluminium process; durable for long time use; require one CR2032 lithium battery Not Included;
Well-Engineered: The laser comes fully adjusted however further adjust if required; it has three openings for adjustment; arranged at 120°; which are initially sealed; small screw cap at the rear of the laser must be first unscrewed to allow this;
Allows you to attach any standard finder scope; Laser Pointer bracket or reflex sight bracket to Schmidt-Cassegrain telescopes "SCT" up to 11 inch aperture; great for second or third aiming device to your Schmidt-Cassegrain for multiple aiming options
Drilled "but not threaded" to accommodate screws up to 4mm in diameter; center to center screw hole spacing on your telescope must be from 21 to 37.3mm in order for this dovetail base to be compatible