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Eyes as cold as ice were measuring her every word.
The large examples measuring from 6 to 9 or more in.
It became, in fact, essential to invent a " micrometer " for measuring the small angles which were thus for the first time rendered sensible.
Da and The micrometer box, and of course with it the whole system of spider webs, is moved by the screw s, whilst the measuring web is independently moved by the screw S.
But on account of experimental errors in weighing and measuring, and through loss of material in the transfer of substances from one vessel to another, such analyses are rarely trustworthy to more than one part in about Soo; so that small changes in weight consequent on the chemical change could not with certainty be proved or disproved.