1. Through it, you can clearly and intuitively see the inclination angle of the yacht fishing boat. 2. The measurement slope for classification or preliminary measurement, and the measurement vertical angle of mobile phones and devices. 3. Use a sturdy plastic protective cover with a shock-absorbing scale to obtain accurate readings. 4. The inclinometer can be used to measure the height of trees, towers, buildings, etc., with strong practicability. 5. Suitable for yachts, fishing boats, ships, RVs, RVs and other transportation vehicles. Project Type: Ocean Inclinometer Application: Suitable for yachts, fishing boats, ships, RVs, RVs and other transportation vehicles. Material:Plastic, metal colour:White Package Contents: 3 x Inclinometer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.