Planet Exactone Tuning Gauge for Yamaha TimpaniThe Planet Gauge is Falls Music Cos proprietary and patented timpani tuning gauge for accurate tuning and durability. The gauges are simple to install and are located directly in front of the player for easy visibility. We also offer a custom protective gauge cover that clips on easily to prevent tampering. Available for: Ludwig, Ludwig Universal, Adams , and Yamaha Timpani. Gauges for older model timpani such as Rogers, Premier, Ludwig Dresdan and