Since it has a locking mechanism, you can work without slippage. Level to use for clumping. It is easy to read with big scale. Angle and gradient from 0 ‹ to 90 ‹ can be measured. Product size / length: 120 mm, width: 240 mm, height: 43 mm. Product weight: 120 g. Package size / length: 290 mm, width: 150 mm, height: 47 mm. Package weight: 166 g. Material: Body: ABS resin / bubble tube: acrylic resin / liquid: petroleum-based liquid. Sensitivity: 0.35 mm / m = 0.0201 ‹. Accuracy: + - 17.5 mm / m = within + - 1.0 ‹. Note: It can not be used for building gradients. Shinwa Rules Co., Ltd. (Shinwa Sokutei) is the leading manufacturer of measuring instruments having the largest share in Japan in the field of metallic scales. Shinwa Sokutei manufactures metallic rulers as flagship products and variety of measuring instruments, and provide them through distributors around the globe. Their products are mainly used for measuring architectural materials in the construction industry and highly reputed as excellent design with user-friendly functions by builders. Also, many professionals working in manufacturing plants and inspection institutions are satisfied with Shinwa's products' lengthy durability under harsh environment. Shinwa Sokutei, which began with the manufacture of metal rulers in 1971, has pursued "measuring" since its founding. The desire to enrich the lives of many people by "measuring" is the origin of Shinwa Sokutei. Shinwa Sokutei develops new products to meet the needs of the times. From the rich product lineup you will be able to find the products you need. Shinwa Sokutei's products will make your work more efficient and high quality.