Features OVERALL QUALITY: Aluminum case offers superior durability and scratch resistance. With block on the bottom, it has absorption function for versatility. EXCELLENT SENSITIVITY: Clearly marked measurement grid on the front panel, with the center of the bubble moving 0.32 inches per 1 degree of tilt. EASY TO USE: 2.3in diameter level is easy to carry and allows you to quickly level objects during measurement. Convenient for leveling measurements and corrections. WIDE APPLICATION: Level bubble is a great tool for the RV, travel trailer to check for levelness, also a leveling tool for camera, tripod, application and so on. HIGH RELIABILITY: The manufacturing conforms to the standard specification, strictly follows the factory quality control, can be used for a long time. Specification: Item Type: Horizontal Leveler Material: Aluminum Alloy + Glass Package List:1 x Horizontal Leveler Note:The high accuracy aluminum alloy shell cannot be dropped. Do not use under strong sunlight. Package List 1 x Horizontal Leveler