The utility model discloses a slide caliper that measurable quantity was rule, depth gauge rule install the bar inslot at the main scale back, and the chi frame is one side open -ended C shape structure, and chi frame slidable mounting is at the main scale back, and chi frame downside be the vernier scale, depth gauge rule and chi frame fixed connection, and masuring jaw fixed mounting is at chi frame left end top in the activity, and the outer masuring jaw fixed mounting of activity still includes rectangle masuring jaw, handle and fixes marking device on one side of the masuring jaw outsidemovable in chi frame left end bottom, rectangle masuring jaw fixed mounting is perpendicular with the right facade of rectangle masuring jaw at blade left end downside and blade, the horizontal fixedmounting handle in rectangle masuring jaw left side, through at blade left end installation rectangle masuring jaw, install the handle outside the masuring jaw perpendicularly for controlling slide caliper in the measurement process, conveniently stretching into narrow space usage, the masuring jaw back sets up marking device outside the activity simultaneously, can realize measuring and ruling, facilitates the use easy operation.