Floating seal pick and place system and unit therefor

A pick and place system (100) is provided with an actuator (206) is responsive to the connection to an air power source (102) to move to a pick-up position. The actuator (206) moves a fork-type link (216) which in turn moves a probe (220) to compliantly move to pick up a micro upon connection to the air power source (102). A replaceable precisor (238) precisely aligns the micro device relative to the probe (220) and a floating seal (240) disposed around the probe (220) and resting on the replaceable precisor (238) seals the probe (220) to the replaceable precisor (238). A system control (104, 160), connectable to the electrical power source (162) is connected to the pneumatic and supply valves (111) (121) for selectively, electrically actuating the pneumatic and supply valves (111) (121).