Mitutoyo's Plastic Case for 0-1" Standard Micrometers. This plastic case will help protect your Mitutoyo 0-1" Micrometer when not using it. For the following Micrometer models... 101-117 101-113 102-701 102-717 102-301 103-129 103-137 103-177 103-131 103-135 Micrometer Sold Separately