Patent ID: 7779552

Claim:
A measuring apparatus provided to measure an article, the measuring apparatus comprising: a workbench comprising a fixing board; four trigger units; a sliding member slidably mounted to the fixing board, the sliding member comprising a receiving body, a guiding hole defined in the sliding member and extending through two opposite sides of the sliding member, wherein the trigger units are fixed to the receiving body, perpendicular to the guiding hole and pairwise opposite, with distal ends of the trigger units received in the guiding hole, a distance of an axis of the guiding hole and a top of the fixing board substantially equals to a required value satisfied by the article to be measured; a positioning unit to fix the article to be measured to the fixing board, a portion to be measured of the article aligned with the guiding hole; an electrical controlling cage fixed and electrically connected to the fixing board; and an indicating member fixed to the measuring apparatus, and electrically connected to the trigger units, wherein the indicating member and the trigger units are also electrically connected to the electrical controlling cage; wherein while the sliding member is slid towards the article, with the portion to be measured passing through the guiding hole, the electrical controlling cage is turned on to power the fixing board and the trigger units; if any trigger unit cannot be triggered to turn on the indicating member, the portion to be measured of the article is qualified; if any trigger unit is triggered to turn on the indicating member, the portion to be measured on the article is disqualified.