Mitutoyo's Plastic Case for 3-4" Digimatic Micrometers. Designed specifically for Mitutoyo 3-4" Digital Micrometers, this Plastic Case from Mitutoyo helps protect your micrometer when not in use. For the following Micrometer models... 293-233-30 293-243-30 293-333-30 293-343-30 293-237-30 293-247-30 293-347-30 Micrometer Sold Separately