Machined aluminum tube 5.5" long fits 1.25" focusers. Has pin-hole top and precisely centred cross-hairs for centering your spider vains (does not remove spider veins
! , primary and secondary mirrors. I used this until I got my Cheshire tool. I checked it against my Cheshire tool and the results were identical.
I'm doing spring cleaning! $17.00 shipped.
Thanks for looking.