A professional who assembles hydraulic chairs, such as professional, laboratory, and hospital chairs from prefabricated and finished parts. Responsibilities include:

• Assembles hydraulic-lifting and chair-revolving mechanisms and mounts them on base.
• Assembles chair frame to base and attaches seat, arm, and headrests.
• Inspects and adjusts completed unit.
• Rethreads screws, retaps holes, and removes excess paint while assembling, to facilitate work.
• May be designated according to type of chairs assembled as dental-chair assembler.