- 3D-Printed polymer leveling tool with integrated bubble vial and smartphone apps for angle measurement helps achieve precise bicycle saddle alignment - Accuracy driven by advanced 3D printing technology. This durable leveling tool features adjustable calibration settings and works seamlessly with mobile angle-measurement apps - Designed for cyclists, bike mechanics, and enthusiasts who prioritize ergonomic saddle positions during riding or bike maintenance - Innovative horizontal calibration systems deliver millimeter-level precision for road bikes, mountain bikes, and indoor cycling setups - Function and compatibility: level and verify saddle tilt and alignment using the bubble vial and compatible smartphone apps; compatible with standard bike configurations and adjustments - Material and performance: lightweight 3D-printed polymer construction provides rigidity for repeatable measurements; calibrated for consistent results across different bike types - Use scenarios: - Road bike fitting: set a neutral saddle tilt to support an efficient, aerodynamic position during long rides - Mountain bike maintenance: recheck and adjust saddle angle to optimize control and comfort on technical trails - Indoor trainer setup: maintain a stable, repeatable saddle angle for consistent endurance workouts - Additional notes: useful during routine maintenance, component changes, or saddle replacements to ensure ergonomic seating positions remain accurate and repeatable