Spinal Goniometer 5Pcs 6/8/10inch 360 Degree Protractor Angle Medical Ruler 360 Protractor [EASY TO READ] - The rotatable straight ruler has a center line through the angle plate, easy to measure and read angle. About this Item Complete 3 Size Joint Measurement Kit: This medical goniometer set includes 6 inch 8 inch and 10 inch 360 degree protractors providing appropriate sizing for shoulder knee elbow and spinal range of motion measurements in clinical settings Semi Transparent Angle Plate Design [TRANSLUCENT DESIGN] - The semitransparent design makes it more convenient to read angle. Goniometer Medical Joint Ruler Calibrated Orthopedics Angle Rule 13inch 33cm. Brand new · Unbranded. £4.98. Free international postage Specification: Material: Plastic, Measuring Range: 6/8/10inch 3pcs Protractor Ruler Small Medical Goniometer Measuring Tool for Angle [SPECIAL DESIGN] - Specially designed for medical measurement.