With the Svbony collimating eyepiece, you can adjust the optics of your Newtonian (mirror) telescope as accurately as possible every time you observe. Only with precisely adjusted mirrors can you get the best image quality from your astronomical telescope.
Newtonian telescopes can be subject to minor/major misalignment due to transport or even strong thermal expansion. It becomes routine for the user to make the correct adjustment after only a few times.
The all-aluminium alloy product weighs 156 g.