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John Walker Newall
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Publication of GB190200116ApublicationCriticalpatent/GB190200116A/en
Length-Measuring Instruments Using Mechanical Means
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Abstract
116. Newall, J. W. Jan. 2. Calliper gauges. - The feelers on one limb of the gauge can be screwed up to adjust for wear, and are clamped by tangent-screws.
GB190200116D1902-01-021902-01-02An Improvement in Limit Gauges
ExpiredGB190200116A
(en)