Automatic Zero-Tracking Mechanism (also Auto Zero) - Automatic means provided to maintain the zero balance indication within certain limits, without intervention of an operator. Environmental conditions as well as internal noise on the circuit can cause the scale's display to drift. The auto zero feature helps to eliminate these unwanted changes in display output and insures that the scale is properly zeroed before each weighing. However, the auto zero feature can be a problem when trying to weigh very small amounts that within the auto-zero range. For instance, if a scale has an auto-zero range of 0.2g and you place less than 0.2g on the scale, the display will not change.

http://www.awscales.com/support/terminology

seems logical

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Note added at 3 hrs (2016-01-21 21:19:49 GMT)
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INSULATION CLASS: B 7>
POSITIONAL ACCURACY: 15 Z l , l BEARINGS: ABECS, DOUBLE SHIELDED g 7021 B ENC CABLE SEPARATE 9/8/14 J KORDIK
HYSTERESIS: N/AZ WEIGHT: 5.0 KG (11.0 LB)

SC - The scale factor, SC, scales the sensitivity of the first decision criterion of the exit mode algorithm to current load cell weight values.

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Note added at 3 hrs (2016-01-21 21:21:43 GMT)
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IMHO, SC stands for Scale factor (=scales the sensitivity of the first decision criterion) and AZ for Auto Zero (=zero balance indication within certain limits).

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Note added at 3 hrs (2016-01-21 21:25:33 GMT)
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Масштабный коэффициент
http://www.bricsys.com/bricscad/help/ru_RU/V10/UsrGui/source...

Таблицы наличия данных на CD-ROM
www.iki.rssi.ru/magbase/HTML/DATINFO.HTM - Oldal lefordítása
Для определения истинного значения масштабного коэффициента пользуйтесь полем SC (scaling factor) комбинированного двоичного MAG-формата ...

Уроки AutoCAD. Команда SCALE (Масштаб).
www.autocadschool.ru/classes/A2/A2_15.htm
Вызов команды: имя SCALE, сокращение SC, меню Modify -> Scale, панель инструментов Modify ... По умолчанию вводится масштабный коэффициент.

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Note added at 5 days (2016-01-26 20:19:26 GMT) Post-grading
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Спасибо!