The metallography: the science studying all k k refers to the measurement.
Magnitudes (time / length / mass / strength)
The edu units (SI / SA)
The mesure of insdtruments (ruler / Caliper)
K kriteri rules allow for the measurement correctly
The Instrucións nesesaries x correctamernt using the measuring instrument.
Measurement:
When we determine the numerical value in the form of unalongitud, mass, etc. femun measurement.
Factors: Linstument measuring the precicio of linstrument, the skill of the operator and the conditions anvientals to make the measurement.
Merurament Type:
Measuring. Live: Quna value suddenly so immediate, mitjancan reading linstrument.
Measuring. Indirect: When the value directly but ke magnitus not suddenly make her a preliminary calculation.
INSRUMEN / MAGNITUDE
Stopwatch / Temsp
Thermometer / Weather
Magnitude: magnitude call ke be komparar everything else with their own species and to estimate if smaller than or equal. Magnitude ke everything can be measured.
Angular units: The system considers dressing circumference divided into 400 parts called degrees k to distinguish it Sexagesimal each grade level is divided into 100 msexa min 100k each and are represented by the S. 2xpi x radians = 360 = 400 Error measurement and control of construction: Starting with the basic measuring k 1 is always inaccurate, imp is approaching the maximum value exact.

Accuracy: The objective of obtaining the most accurate possible more or less accurate measurement, the real value of the magnitude named: accuracy.and accuracy assessment: are tied al'exactitud precision: the ability of a measuring instrument to provide results with at least 1 error, assessing: the minimum size k can be read in its scale. The annexation of an instrument of measurement to follow the norm of healthy dk its precision to be 10 times higher degree of accuracy k is to measure the dimension of measurement error: the difference between the reading obtained measurement and the actual value in magnitude, its real value is the arithmetic mean. Measuring nominal and tolerances:within the phase of manufacturing is impossible to make 2 equal parts due to factors such as wear of tools, etc. temp variation. The different measures of maximum and minimum limits dl'error k aseñala is called tolerance. Called as the nominal value of the size indicated on the map. Measure effective dimension that has ever made as 1 piece Basics: Topic: any pairing s'agui cylinder inside of another element. Hole: any prismatic or cylindrical housing.Higher difference: the difference between measured and nominal maximum S = ln-Lmax bottom Difference: difference between measured and nominal minimum extent Say Lmin =-ln