Features: 1. This is a highly accurate linear scale with a measuring range of 0 to 300 mm. 2. Slide part adopts reliable and durable design of the system with 5 bearings. 3. The repeated position measurement is accurate and stable. 4. The signal cable uses a multi-layer shielded steel wire and metal housing protection. 5. The scale body uses aluminium profile and head uses zinc alloy die-cast with chrome coating, corrosion resistance. Specifications: Measuring range: 0 mm - 300 mm. Accuracy: ± 5um. Resolution: 5 um Scale size: 33 x 21 x (300 + 140) mm. Package weight: Approx. 1141 g / 40 oz. Package contents: 1 x linear scale with installation accessories