The Micro-Dot dispenser combines a syringe-type fluid container with a handheld manual dispenser. Has a plunger that reportedly extends in precise increments each time the actuating lever is depressed. Can set output volumes with a twist of a control knob. Can dispense a range of materials in volumes from microliters to milliliters. Combines a syringe-like fluid reservoir with a plunger-less piston. Has a safety interlock feature.
 
Tridak, www.tridak.com