Large pipettes (graduated in milliliters) and their associated pipet filler bulbs (http://www.cbu.edu/~mcondren/c214/pipet/3bulbpic.htm)
(http://www.cbu.edu/~mcondren/c214/pipet/3bulbpic.htm)
(https://www.thevespiary.org/rhodium/Rhodium/hive/hiveboard/picproxie_docs/000497749-file_lj3k.jpg)(https://www.thevespiary.org/rhodium/Rhodium/hive/hiveboard/picproxie_docs/000497749-file_f6do.jpg)
Pasteur pipettes (usually 2-3 mL) use small rubber bulbs to draw up liquids:
(https://www.thevespiary.org/rhodium/Rhodium/hive/hiveboard/picproxie_docs/000497749-file_mlpe.jpg)
Now you can use the above keywords to conduct a fruitful google search for more information.
What are you going to hypothetically use it for and how accurate do you need it? Are you looking for something that measures only mL amounts or to the closest mL?
If you just need something that you can set and forget to dispense liquids with pretty good accuracy to the mL over and over again, I found bottle top dispensers very handy.
http://www.eppendorf.com/en/?jump=http%3A//www.eppendorf.com/script/cat-nav.php%3Fc%3D1%26l%3D25&jumpmenu=8T (http://www.eppendorf.com/en/?jump=http%3A//www.eppendorf.com/script/cat-nav.php%3Fc%3D1%26l%3D25&jumpmenu=8T)
Look for the bottle top dispenser, Varispenser® plus/Varispenser for a picture of one.