Patent ID: 8882095

Claim:
A clamp meter comprising: a main body; a stationary jaw fixed to an end of the main body; and a hook portion including: a movable jaw mounted to the main body at a position corresponding to the stationary jaw, the movable jaw and the stationary jaw forming a closed loop; a displacing means mounted in the main body, the displacing means comprising a displaceable rod connected to the movable jaw and a gear set for driving the displaceable rod to displace; and a knob connected to the gear set for driving the displaceable rod and the movable jaw for linear displacement, wherein the displaceable rod is a linear toothed rack, wherein the displacing means further comprises a supporting plate fixed to the main body, the gear set comprises a driven gear and a ratchet wheel, the driven gear is pivotally connected to the supporting plate via a pivotal shaft, and the ratchet wheel is connected to the knob, and wherein the supporting plate on one side of the pivotal shaft is provided with a through-hole, the knob comprises a trigger and a rotary shaft connected to one end of the trigger, and the rotary shaft is disposed through the through-hole to be fixedly connected with the ratchet wheel.