NASA Space Shuttle engineering assures smooth and effortless operation. Performs like a robot arm in zero gravity. Fingertip control raises, lowers, and pivots (360 degrees) the perfectly balanced holder wherever desired. Moves in all directions and the arm articulates at three points. Weighted die-cast metal base and spring counterbalance permit fluid movement with superior stability. Complete with 21-inch metal arm, 8-inch diameter metal base, and probe holder.

Specifications:

Diameter: 10mm and 14mm
Weight: 6 lbs