This is the Century Helicopters Control Rod Setup Gauge.

FEATURES: Blue anodized aluminum construction
         Metric ruler on base allows for precise rod set-ups up to 150mm in length
         Slider features a thumb screw to lock in diamensions
         Allows you to make multible linkages the exact same length

INCLUDES: One base unit with slider and thumb screw
         Four pre-mounted 5mm balls
         One instruction sheet

SPECS:    Length: 8.75" (195mm)
              Width:  1" (25mm)
              Height: .25" (5mm)