Features: Achieve precise bike seated alignment with our 3D print polymers leveling tool features integrated bubble vial and smartphone apps compatibility for angles measurement. Accuracy engineered through advanced 3D printing technology, this durability plastic gauges includes adjustment functionality and works seamlessly with mobile angles measuring apps. For cyclists, bike mechanic, and DIY enthusiasts who prioritize ergonomic seating positions during cycling or bike maintenance. Perfect for fine tuning bicycles seated balance in garages, repair shops, or before outdoor to enhances cycling comfortable and stability. The innovative horizontal calibration system ensures millimeter level accuracy across road bikes, mountain bikes, and indoor cycling setups. Specifications: Dimension:120×190mm/4.72×7.48in Component:Plastics Package Includes: 1pc 3D Print Bike seated Leveling Tool note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.