3 pound
The thermometer scales the temperature.
94 mm on a ruler is between 90 mm and 95 mm. On a typical ruler containing both mm and inches scales, where the scales are reversed with respect to each other, 94 mm is opposite 8 5/16 inches.
So that they are at a large enough scale to see everything in enough detail to get the idea it portrays across, but also not so large that it is cumbersome or needlessly large.
The strength of an earthquake is more correctly termed it's magnitude and is measured using a magnitude scale. Currently seismologists use the moment magnitude scale (which was developed to replace the Richter scale in the 1970's). The magnitude sclae is a way of representing the energy emitted during an earthquake. The damage and perceived ground shaking in an earthquake is known as it's intensity and this is measured using the Modified Mercalli scale or (in Europe) the Macroseismic scale. For more information on the types of magnitude and intensity scales, please see the related questions.
The lever, the wheel, the automobile, the steam engine, threshers, the cotton gin, penicillin, radio, television, the printing press, writing, language, mathematics, architecture, physics, chemistry, metallurgy, art, etc....
I assume you mean the manufacturer while making and selling scales and balances. By the specifications on the equipment they are selling.
Balances and scales.
Scales or balances.
Scales or balances
ScaleBalanceScales and balances.a spring balanceScales are very good at that job.Weighing scales
Val Miller has written: 'Recommended guide for determining and reporting uncertainties for balances and scales' -- subject- s -: Balances - Weighing instruments -, Calibration, Scales - Weighing instruments -, Standards
Scales and balances.
The Wikipedia article on weighing scales has a good section on beam balances: http://en.wikipedia.org/wiki/Weighing_scale#Balance
The abbreviation lb comes from the Latin word libra, meaning scales or balances which also described a Roman unit similar to the pound.
Mass balances compare the force of gravity on two masses, while weighing scales use a spring and measure the force of gravity by studying the extension of the spring. A mass balance would give the same answer on the Moon, while the weighing scales would give an answer about a sixth of the correct value.
Rulers (meter rules etc..) Scales Balances (spring balances, lever balances etc..) Micrometers (Digital/Analogue) Verniers (Vernier Callipers) Timers (stopwatches, timing oscillations, electronic timers)
The type of balances that measure mass is usually the triple beam balance, you move the weights around units almost like the s just the right amount. {its almost like the measuring scales that doctors use to measure your weight, but tinyer!}