How to assure to measure the value of limits

A lot of people often the measurement the spare parts and metric confuse sth with sth else. Although essentially similar of this both mode of operation, but understood only both the delicate difference between, just can improve these two technology measure precision and efficiency. "Measure " it is the process that referenced some standard will come to determine size of some spare parts. The measurement of a few nicety tool, if rear sight, callipers and micrometer are belonged to,measure an instrument. They have inside the size reference standard of buy, be like watch of accurate graduation mark, magnetic force or accurate screw, the spare parts undertakes comparative with these standards that had provided namely. Contain the big range number that measures workbench to show instruction sheet to also belong to a measuring instrument to express, because the datum plane of workbench is served as,measure reference fiducial. Measure range as a result of what measure an instrument wider (it is commonly between 25 ～ 50mm) , have muti_function characteristic, because this often is used in job shops of general work detect. Graph: Measure the number with very wide range to show dial gauge (below) in its whole inside very long journey length range, can offer very the measure measured value of high accuracy. The dial gauge above or number show comparator certain to measuring the measuring instrument that a kind of better choice is type calipers quite implement, its machinery measures range opposite shorter metric it is a kind of measurement technique that compares style, the level that is used at whether a spare parts is less than or be more than certainly to book (or standard advocate) . Metric test watch is done not have inside the reference standard of buy. Below major case, this standard or standard advocate be taken on metric watch, next metric watch according to set of this one dimension. Metric watch often uses a test only a spare parts. Accordingly they apply to large quantities of area that estimate production, and its measure precision to often want prep above to measure a tool. Because they apply to special measurement to use a field only, accordingly its function sex did not measure an instrument so tall, and also do not need very big measurement limits, general under 5 Mm enough. Accordingly, when using metric appearance to measure, resolution is extremely high. According to big toe law, measure a tool to have wider measurement limits and taller muti_function characteristic, and the span of metric watch or comparator shorter, versatility is inferior, but have taller measurement precision. Will have a look at comparator and the situation that measure instruction sheet how to apply below. The measurement that dial gauge and number show comparator range is very narrow, but their measurement precision and resolution are very high. Their much measures range under 5mm. Of some 1000 minutes of comparator measuring range is such stricture, but read rise actually very convenient, the reading that shows because of them has only onefold the resolution number that measures range. And the value that dial gauge and number show comparator is relatively a few cheaper also, show dial gauge than number more operate easily (need to be debugged only) . On the other hand, number shows dial gauge to have longer measurement limits, be more than 12mm commonly, on occasion its measure limits to also have be as long as 50mm. Accordingly we define them to measure an instrument. However, also see somebody shows number dial gauge to set the condition that uses into metric comparator. For the case that cites a typical case, it is OK that one measures number to show instruction sheet installation is on high test desk. If be instruction sheet on test desk base,tone comes " null " , it can be in its are offerred inside limits of whole journey length very the measure measured value of high accuracy. But if same setting is used on metric comparator, that is to say according to the standard advocate debug " null " , it is actually " wasted " what number shows instruction sheet is redundant measure range, paid additional fee for needless function. Press the inference that be the same as manage, the calipers that compares style to debugging machinery, using number to show comparator to be able to say is a kind of better choice, the range that because its are mechanical,measures is opposite shorter. The measurement of comparator limits and the metric list that compare type height test desk are similar, because this has better character of service and economic character. Anyhow, the key is to maintain measure range, and should not waste measure range. If metric limits needs 5mm only, and what install actually is a number that measures limits to be 25mm shows metric list, so this is wasted one kind namely. Among them redundant 20mm measures limits to should apply a few otherer can get more in the domain that make full use of. CNC Milling