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Robert Blakoe
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Length-Measuring Instruments Using Mechanical Means
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Abstract
15,606. Blakoe, R. July 23. Gymnastic apparatus. - A part circle A of tempered spring steel &c. has grips E, F by which the ends can be urged together or drawn apart to an extent which can be measured by a scale G bridging the gap. By this means physical strength can be gauged. The scale may be provided with a sliding marker N.
GB190815606D1908-07-231908-07-23A Device for Developing and Strengthening the Muscles of the Body and Arms.
ExpiredGB190815606A
(en)