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The MITUTOYO 187-105 is an acute angle attachment designed for use with compatible Mitutoyo protractor heads to extend angular measurement capability into acute angles. The attachment features a maximum measurement range of 360 degrees, with a dial graduation of 1 degree and a finer graduation of 5 minutes, allowing precise angular readings in demanding layout and inspection work. At 1 pound, the unit is compact and practical for bench or field use. Machinists, tool and die makers, and metrology technicians rely on this type of attachment to accurately measure angles that fall outside the standard protractor range.
This acute angle attachment is suited for precision measurement applications in manufacturing, machining, and quality control environments. It is intended for use as part of a universal bevel protractor setup, providing extended angular measurement when working with workpieces that require readings in tight or acute angle configurations. The attachment is sold individually and is appropriate for both production floor and inspection room use where accurate angular measurement is critical.
Designed as an OEM-style acute angle attachment for use with compatible Mitutoyo universal bevel protractor systems requiring extended angular measurement capability.
Installation and setup of precision measurement attachments should be performed by a qualified machinist or metrology technician familiar with the host protractor instrument. Ensure the protractor head and attachment mating surfaces are clean and free of debris before securing the attachment to avoid measurement error. Handle all contact surfaces with care to prevent damage that could affect calibration accuracy.
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