The answer to the question depends on the weights of each item going down the conveyor.
Weighing scale is called "秤" (chéng) in Chinese.
Philipp von Jolly invented the modern weighing scale in 1874.
once upon of the time
The name of the creator of the first weighing scale is lost in antiquity. The most ancient relics of a weighing scale date back to around 2,000 B.C.
1.) Some of the sample may have been lost in between testing that could resulted in slight error when calculating your molar mass. 2.) Weighing sample incorrectly and having too low/high std. deviation
Pencil and paper, abacus, mechanical calculator, log tables, electronic calculator (or computer), proportional weighing machines.
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
Belt weigher used only for measuring the material flow rate.But weigh feeder can measure the flow material and also control or regulate the flow rate by varying the belt conveyor speed.
Equal arm balances are recommended for laboratories, to weigh small amounts of materials. I believe that they are more exact.
A 1-1½" needle is recommended in women weighing 152-200 lbs (70-90 kg) and men weighing 152-260 lbs (70-118 kg) SOURCE: http://www.immunize.org/catg.d/p2020a.pdf
Digital scale is a electronic weighing devices that integrate with modern sensor technology, electronic technology and computer calculating technology. It is more accurate, more sensible, more convenient than traditional spring scale.
The features for a United States Postal service medium flat rate box are: No weighing or calculating of shipping price, and delivery with 2 - 3 days of ordering.
Obtain an appropriate weighing device. Make sure the device is calibrated properly. Perform the weighing by placing the object on top of the weighing device.
Weighing (US)
definition of weighing range
This really depends, there are thousands of weighing scales.
Any kitchen supply or health food store. They're widely available for weighing food, especially on medically-recommended diets such as for diabetics etc.