Optical measuring machine maker Precise Gauge developed and launched sales of an auxiliary fixing hardware called "Inner Grip Ring". With the ring, the user can assemble or take out parts without removing the screws. After embedding the ring into a pre-dillled hole on the part and assembling the part with a screw, the ring expands and presses the inner portion of the hole and stays put. When the user loosens up the screw, the pressing force weakens and the part can be taken out. This will prevent missing or dropping screws and improve operational efficiency.