Weight 604g and total length of 240mm, which is a very small and compact autoguiding system; almost adds no weight to an astrophotography setupThe graduated helical focus travel that makes focusing easier; A graduated telescopic draft tube that allows you to easily achieve focus even with an eyepiece when you normally need an extensionQuick focus retractable tube with 1mm scale can be locked in place; 1/10 mm precision scale with dual helix focusing system allows precise focus adjustments without any bending for stiff performanceThis guide scope comes with 2 heavy duty guide scope rings and a dovetail mount bar that is compatible with dovetail scope bases for easy attachmentThis versatile guide scope can also function as a direct sight with an optional 1.25 "eyepiece; the guide scope can be monocular without the support of this guide scope