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Henry John Jackson
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Individual
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G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
G01B3/00—Measuring instruments characterised by the use of mechanical techniques
G01B3/16—Compasses, i.e. with a pair of pivoted arms
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General Physics & Mathematics
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Length-Measuring Instruments Using Mechanical Means
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Abstract
4870. Jackson, H. J. Feb. 25. Linear-dimension gauges.-Calliper gauges for use in measuring objects of triangular or hexagonal form comprise three pivoted legs connected by links to a nut with washer and locknut working on a central screw stem. The callipers are intended to be used with the measuring-rule described in Specification 4866/14.
GB191404870D1914-02-251914-02-25Improvements in Callipers.
ExpiredGB191404870A
(en)
A new wrench to replace the so-called "spanner" and "thumb wrench" for adjusting and tightening the nuts, bolts, threaded studs and other threaded fittings.