Overview Reviews Product Description Extendable goniometer offers easy-to-read scale, and adjustable leg length for measuring large and small joints. Steel arms extending 9_" to 26". 4x magnifying lens to read the dual 180° scale. Product Videos Custom Field Product Reviews (No reviews yet) Write a Review Write a Review × Baseline 180 degree extendable legs (9-26") with magnification Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name *Email *Review Subject *Comments