I use terumo 3cc syringes w/ distinct 0.5cc markings but no distinct 0.25cc markings. There are markings between each 0.5cc so I can get a pretty accurate eyeball but any way to ensure 0.25cc instead of eyeballing it.

background info (so you know why I would ask such a question):
test cyp: 1.5cc
eq: .75cc
total: 2.25cc
each mon/thurs