The Mitutoyo Japan Outside Micrometers (103 Series) is part of the brand of compact devices which gave the company its trustworthy reputation. It features a baked-enamel-finished housing in a hammertone-green color. It sports a friction thimble or ratchet stop for efficient repeatability. It also comes with a provided setting standard (with the exception of 0-25mm/0-1” models), and an expansive array of technical information precision (for a full list, please refer to the archive of specifications).
The 103 Series graduations include a varied list of fluctuating graduations, such as 0.01mm, 0.001mm, .001" or .0001". The same goes for its flatness (0.6μm/.000024” for models up to 300mm/12” 1μm/.00004” for models over 300mm/12”), as well as its parallelism measurements (2+R/100)μm, R = max. range (mm) [.00008+.00004(R/4”, R=max, range (inch) (fraction, rounded down).