Instrumentation terminology introduction

An interval of a quantity defined by the upper and lower limits.
  Note: "Scope" is usually a modifier. For example: measurement range, scale range. It can be used for measurements or working conditions, etc.
   Measuring range
  The measured range to be measured according to the specified accuracy.
   Measuring range upper limit measuring range higher limit
  The measured maximum value measured according to the specified accuracy.
  Zero [scale] mark zero scale mark
  Synonym: zero scale line.
  A scale mark or scale line marked with a "zero" number on the dial (plate).
   Scale spacing, length of a scale division
  The distance between the centerlines of any two adjacent scale marks measured along the same line segment representing the scale length.
   Scale division
  The scale portion between any two adjacent scale markers.
   Scale division value
  Also known as the grid value.
  The difference between the measured values of the two adjacent scale marks in the scale.
 Scale length
  On a given scale, the length of the line segment passing through the midpoint of all the shortest mark midpoints.
  Note: This line segment can be a real or imaginary curve or line.
 Scale numbering
The entire set of numbers on the scale, which corresponds to the measured value determined by the scale mark, or only the numerical order of the scale mark.
Scaling start value
The measured value corresponding to the scale start point mark.
Scale end value
The measured value corresponding to the scale end mark.
Zero-scaling scale suppressed-zero scale
 The scale of the scale value corresponding to the measured zero value is not included in the scale range. For example: the scale of a medical thermometer.
Extended scale
 Within the scale, the disproportionate extensions account for most of the scale length scale.
Linear scale
  A scale in which the scale spacing in the scale is in a constant proportional relationship with the corresponding grid value.
  Note: The linear scale where the scale spacing is constant is called the rule scale. Nonlinear scale
  A scale in which the scale spacing of each scale in the scale is in a very proportional relationship with the corresponding grid value.
  Note: Some non-linear scales have specific names, such as log scales and square law scales.
Measuring range lower limit
  The measured minimum value measured according to the specified accuracy. Span span
  The algebraic difference between the upper and lower limits of the range. For example, when the range is -20 ° C to 100 ° C, the range is 120 ° C.
  Reference performance characteristic
  Performance characteristics achieved under reference operating conditions.
  Scale
  An ordered set of scale marks and all relevant numbers that form part of the pointing device. Scale mark
  A scale line or other indicia corresponding to one or more determined measured values on the pointing device.
  Note: For numeric indications, the number itself is equivalent to the scale mark.
  Scale range
  The range bounded by the scale start point value and the end point value.