The Great Planes Accu-Throw Control Surface Deflection Meter Accurately Adjusts Control Throws for the Best Flight Performance on R/C Aircraft. This Gauge is UNASSEMBLED. FEATURES: Unique design provides the easiest, most accurate measurements Works with most models, from trainers to jets, with control surfaces up to 5" wide Rubber attachement feet grip securely while protecting the airplane"s finish Curved ruler matches the controls" motion for precise readings in standard and metric scales (up to 2" or 51mm) Perfect for setting up dual rates INCLUDES: Ruler (with metric scale on one side and standard on the other) Two long and two short support wires (for use on large and small surfaces) All necessary hardware with hex wrench for assembly Illustrated instructions 2-28-98/eke ir/jl