The Plastic set (upper picture) includes: • Plastic Goniometer 15 cm | 0° to 360° per 1° • Plastic Goniometer 20 cm | 0° to 360° per 1° • Plastic Goniometer 30 cm | 0° to 360° per 1° • Rulong Goniometer 20 cm | 0° to 360° per 2° • Pocket Goniometer 15 cm | 180° • Plastic Flexion-Hyperextension goniometer