CC'ing cylinder heads

Besides the kits at Summit/Jegs I'd love to hear how some of you guys have cc'd the chambers on cyl heads

I went looking for syringes on the net and easily found 70cc, but was looking for 80cc, just to have. A plastic plate or CD as was mentioned elsewhere which can be easily found locally

Wondering what the creative minds out there (read hot rod mechanics) have come up with
100 cc medical syringe graduated in 5 cc increments, piece of plexiglass,some green food coloring I used this when I needed to get my 360 heads to 90 cc for final of 7.4-1 low tech as hell but worked flawless just had them cc'd at the shop worst was 88 cc best 6 were 90 cc dead on :afro: