About Us

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Michael, Leo, Jon, 3 Generations of O'Learys

Leo O'Leary founded L.F. O'Leary in 1975 in Weymouth Massachusetts working out of his gargage. We started as a precision gage distributor specializing for the Aerospace and Defense industry. Today  we represent dozens of different vendors in the the dimensional metrology and hard gaging industry across many manufacturing industries.


Those vendors include Dorsey Metrology, Dyer Gage, Flexbar, Fowler Precision, Glastonbury Southern Gage, Inspection Arsenal, Mahr, Mitutoyo, Oasis Inspection, Renishaw, Starrett, Suburban Tool and many more!


Always growing in 1995 we created our calibration division Metrology Services Inc. To better provide a quality service for our customers with a ISO 17025:2017 accreditation. This way we are you one stop shop for all your calibration and inspection needs!