# KNOWLEDGEBASE *>* Scale Terms & Definitions

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*Terms & Definitions*

**Accuracy**-the condition or quality of being true, correct, or exact; freedom from error or defect; precision or exactness; correctness

**Analog**-of or pertaining to a mechanism that represents data by measurement of a continuous physical variable, such as voltage or pressure

** Avoirdupois**-a system of weights used in many English-speaking countries. It is based on the pound, which contains 16 ounces or 7000 grains. 100 pounds (US) or 112 pounds (Brit) is equal to 1 hundredweight and 20 hundredweights equals 1 ton

** Balance**-an instrument for determining weight, typically by the equilibrium of a bar with a fulcrum at the center, from each end of which is suspended a scale or pan, one holding an object of known weight, and the other holding the object to be weighed

** Base**-See 'Platform'. Constructed in a range of sizes and materials depending on the intended application

** Calibrate-**to determine, check, or rectify the graduation of (any instrument giving quantitative measurements).

** Capacity**-the upper limit of what something is rated for; max load with regards to weigh scales

** Carat**-a measure of the weight of precious stones, esp diamonds. It was formerly defined as 3.17 grains, but the international carat is now standardized as 0.20 grams

** Compression**-A force that tends to shorten or squeeze something, decreasing its volume

**Digital**-representing data as a series of numerical values

** Dimension**-measurement in length, width, and thickness. Magnitude; size. Matter has dimension

**Excitation**-the application of voltage to an electric device such as a transducer

** Foot**-a unit of length, originally derived from the length of the human foot. It is divided into 12 inches and equal to 30.48 centimeters

** Grain**-the smallest unit of weight in most systems, originally determined by the weight of a plump grain of wheat. In the U.S. and British systems, as in avoirdupois, troy, and apothecaries' weights, the grain is identical. In an avoirdupois ounce there are 437.5 grains; in the troy and apothecaries' ounces there are 480 grains (one grain equals 0.0648 gram)

** Gram**-a metric unit of mass equal to one thousandth of a kilogram. It is equivalent to 15.432 grains or 0.002205 pounds

** Gravity**-the force of attraction by which terrestrial bodies tend to fall toward the center of the earth

** Gross**-total without any deductions

**Hysteresis**-the lag in response exhibited by a body in reacting to changes in the forces, especially magnetic forces, affecting it

** Inch**-a unit of length, 1/12 (0.0833) foot, equivalent to 2.54 centimeters

** Indicator**-an instrument that displays information indicating the condition or status of a machine or the like. Ranging from basic display only functionality to process controllers capable of equipment interfacing and system integration

**ISO**-International Standardization Organization

**Junction**-an act of joining or combining

** Kilogram**-The base unit of mass in the International System of Units, equal to 1,000 grams (2.2046 pounds)

** Load**-something to be borne or conveyed; weight

** Load Cell**-transducers designed for measuring applied forces. Can be summed in systems and mated & calibrated with an indicator to display real time information and/or use that information in weight based operations

** Mass**-a collection of incoherent particles, parts, or objects regarded as forming one body

**Measure**-the act or process of ascertaining the extent, dimensions, or quantity of something

** Meter**-the fundamental unit of length in the metric system, equivalent to 39.37 U.S. inches, originally intended to be, and being very nearly, equal to one ten-millionth of the distance from the equator to the pole measured on a meridian: defined from 1889 to 1960 as the distance between two lines on a platinum-iridium bar (the “International Prototype Meter”) preserved at the International Bureau of Weights and Measures near Paris; from 1960 to 1983 defined as 1,650,763.73 wavelengths of the orange-red radiation of krypton 86 under specified conditions; and now defined as 1/299,792,458 of the distance light travels in a vacuum in one second.

** Metric**-pertaining to the meter or to the metric system

** Metrology**-the science of weights and measures; the study of units of measurement

** Net**-remaining after deductions

** Newton**-the standard unit of force in the International System of Units (SI), equal to the force that produces an acceleration of one meter per second per second on a mass of one kilogram

**Ounce**-a unit of weight equal to 437.5 grains or 1/16 pound (28.35 grams) avoirdupois

** Platform**-a flat surface raised and separated from the surrounding area. The area where loads are placed on many types of scales

**Precision**-the state or quality of being precise; accuracy; exactness;mechanical or scientific exactness

** Pressure**-the exertion of force upon a surface by an object, fluid, etc., in contact with it

**Resolution**-readability as it pertains to indicator displays. Usually contingent upon cell/transducer specs. How the operating unit is divided and displayed, i.e. .01 lb

** Scale**-a balance or any of various other instruments or devices for weighing

**Standard**-something considered by an authority or by general consent as a basis of comparison; an approved model

** Tare**-the weight of the wrapping, receptacle, or conveyance containing goods. A deduction from the gross weight to allow for this

** Tension**-the act of stretching or straining

** Torque**-rotational force calculated as force multiplied by distance with units such as ft-lb, N-m, etc.

**Traceability**-having a history or line that can be followed continuously back to a source

**Transducer**-a device that receives a signal in the form of one type of energy and converts it to a signal in another form: A microphone is a transducer that converts acoustic energy into electrical impulses.

**Uncertainty**-unpredictability; indeterminacy; indefiniteness

**Unit**-any magnitude regarded as an independent whole; a single, indivisible entity

** Weigh**-to determine or ascertain the force that gravity exerts upon (a person or thing) by use of a balance, scale, or other mechanical device

** Weight**-the force that gravity exerts on a person or thing