Mitutoyo South Asia Pvt. Ltd. Offers Digimatic Micrometer Heads with Constant and Adjustable Fine-loading Device. Mitutoyo South Asia Pvt. Ltd manufactures various types of precision instruments. The Digimatic Micrometer Heads with Constant and Adjustable Fine-loading Device, Series 227, has constant and low measuring force mechanism in the thimble. The Digimatic Micrometer Heads with Constant and Adjustable Fine-loading Device has non-rotating spindle with linear encoder. These Heads have Speedy spindle feed of 10mm/rev.