meters and kilo- numerous experiments, the first rule was delivered in April, 1886. grammes had to be very hard and unchangeable with reproducing the speeches that were delivered. It The rules have the form shown in Fig. 1. This form, time, not attackable by atmospheric agents and by was at the… … Fig. 1-8TANDARD METER. Fig. 2.—FLEXION OF THE by polishing a space near each extremity, and then the renouncing the primitive and theoretic definition of RULES. Fig, 3DEVICE FOR GRADUATING THE rule was placed in a horizontal comparing apparatus, standards, decided simply to copy the meter and kilo-…
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