Assembly size detector

The utility model discloses an assembly dimension detector, which comprises a workbench, a support and a mounting plate, the bottom end of the support is provided with support legs, the bottom end of the support is provided with the workbench, one end of a limiting plate is provided with a threaded rod, and the top end of the mounting plate is provided with an induction mechanism. The fixing plate is mounted at one end of the mounting plate, the fixing plate and the limiting plate are connected through the threaded rod and the connecting rod, the threaded rod and the fixing plate form threaded connection, the threaded rod can be screwed to drive the threaded rod to move, and the limiting plate can be driven to move by moving the threaded rod; the assembly can be clamped between the limiting plates by moving the limiting plates, the assembly is limited, the situation that the assembly deviates is prevented, the connecting rods can stretch out and draw back, the limiting plates can be guided by stretching out a