SHINWA 65092 Aluminum Cutting Rule 2.5 m/shakuStainless steel edges prevent damage from a cutting blade Rubber stopper on the back helps to position the rule better Unique shaped handle makes it easy to hold. (with Handle model) Suitable for carpentry using with shaku graduations Double left Reference Point model: When either the shaku or cm scale is on the upper level, that graduation's reference point reads from the left side edge(. Item code 65088 is a Left Reference Point model that reads