The Moore & Wright CSM Precision Rules are fully hardened and tempered precision rules with deeply etched graduations on both sides for ease of reading and long life. Theseare rules specifically designed for use with the Combination Sets (MAWCSM300 & MAWCSME12).The Moore & Wright CSRME24 is a 600mm/24in rule is perfect for use with the combination sets and is graduated on both sides. Measurements: Metric Graduations: in 0.5mm, numbered every 10mm. Imperial Graduations: 32nds and 64ths numbered every 1/8in. PLEASE NOTE This is ONLY the Rule.