Abstract: A leverage device includes elongated body connected to a pivoting base, and a means for attaching the elongated body to the “T” handle of a pump used in filling air tanks. In use one securely connects the pivoting base to a stationary vertical surface, connects the attachment assembly to a pump, and repeatedly moves the elongated body in an up-and-down motion. This action moves the attached pump's “T” handle, thereby causing the pump's piston to move with decreased effort and increased speed over the conventional motion of pumping. In this manner a compressed air tank can be filled to approximately 3,000 psi using human power only.