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For a description of a procedure which is most convenient when many flasks are to be calibrated, the student is referred to the !Am. It cannot be too strongly emphasized that for the success of analyses uniformity of practice must prevail throughout all volumetric work with respect to those factors which can influence the accuracy of the measurement of liquids.
It is plain that any temperature which is deemed most convenient might be chosen for a particular laboratory, but it cannot be too strongly emphasized that all measuring instruments, including burettes, pipettes, and flasks, should be calibrated at that temperature in order that the contents of each burette, pipette, etc., shall be comparable with that of every other instrument, thus permitting general interchange and substitution.
Burettes may also be calibrated by drawing off the liquid in successive portions through a 5 cc. pipette which has been accurately calibrated, as a substitute for weighing.
The little gun had a very precisely calibrated fast-acting stunner attachment, and old Runser Argee had instructed Trigger in its use with his customary thoroughness before he formally presented her with the gun. She had never had occasion to turn the stunner on a human being, but she'd used it on game.
"And also," he adds, showing obverse as well as reverse of the world's problem of employment and discipline, "we can see at once if a woman is not in her proper shed." Across the great sheds under the shafting how fine it must look at night! the shells march, are shaped, cut, fitted with copper bands, calibrated, polished, varnished....
The strength of the arm's resistance to downward pressure could be calibrated with a spring scale and precisely gauged, but experienced practitioners have no need for this bother, because they are able to pick up subtle changes in the arms resistance that are not apparent to the testee.
He identified a waterproof switch on the box, and two small knobs mounted on calibrated plates. These were obviously controls, but he had no idea what they controlled. Steve would want a few close-ups. Rick worked his camera focus and took shots from every angle. When he had enough, he pulled twice on the rope in a signal to surface. Scotty motioned to him to lead the way.
Gravity or a spring is used to bring the index to the zero of a divided scale, at which time the plane of the copper ring or band makes an angle of, say, 15 degrees to 20 degrees with the plane of the coil. This angle is increased by deflection more or less great, according to the current traversing the coil. The instrument can be calibrated for set conditions of use.
We're not too familiar with what they do, though the reports indicate the worst effect is a mild anoxemia, which generally results in something of a headache. Of course, that's if the quantity of the drug was precisely calibrated. They can be fatal," he added as an afterthought. "Would anoxemia cause a change in character, doctor?" "It might.
After having been subjected to the action of the gas for two or three hours, the filament is taken from the glass globe, its diameter is carefully measured, the length is calibrated, and it is set on a platinum support, to which it is soldered by a very ingenious process.
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