Patent ID: 8272139

Claim:
A curvature examining jig for examining a curvature of a circuit board with a protrusion, the curvature examining jig comprising: a platform having an examining region so as for the circuit board to lie flatly within the examining region, the examining region having therein a recess for receiving the protrusion; and a carrier slidably coupled to the platform, the carrier configured to move along a margin of the circuit board, and provided with a plurality of plug gauges facing the platform closely and movable to the examining region together with the carrier; wherein, when the plurality of plug gauges are unable to move to between the circuit board and the platform, the curvature of the circuit board falls within an allowable tolerance; wherein, when one of the plurality of plug gauges is able to move to between the circuit board and the platform, the curvature of the circuit board exceeds the allowable tolerance.