General description The AlwaysH 12 Inch Adjustable Sliding Combination Square Ruler and Protractor Level Measuring Set is a versatile tool designed for all your leveling needs. It features a 12-inch stainless steel ruler, a protractor head, a center head, and square heads, making it ideal for precise measurements and angles. The dual 180-degree direct reading protractor scale allows for easy and accurate readings in both inch and metric units. Technical specifications Material: Stainless steel Package Dimensions: 35 x 16.5 x 2 cm Other information Note: Measurements are taken manually; allow for an error of 1-3 cm due to variations in light and display. Color differences may occur; please refer to the actual item received.