After reading this thread; why don't you mixologists use a Burette (or a pipette)?
Available locally: http://brewmart.co.za/index.php?route=product/category&path=61_94_103 Burette (25ml Total /0,05ml Increments)
Pipette (Graduated 50ml)
Available locally: http://brewmart.co.za/index.php?route=product/category&path=61_94_103 Burette (25ml Total /0,05ml Increments)
Pipette (Graduated 50ml)