Twin Axis Goniometer – Neck, Elbow, Ankle – (hind foot placement) – adapted for ActiveTwo. This twin axis goniometer simultaneously measures angles in two planes of movement. The goniometer has two separate output connectors for the signals from the two axes of motion. Price includes connection lead (1500mm length) and special active strain gauge preamp near the sensor. Excludes the cost of two required Ergo inputs.