Differentiate between line standard and end standard
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Line standard : in line standard the unit of length is defined as distance between centres of engraved lines as in steel rule . scales are subjected to parallex effect of source of both positive and negative readily errors .
End standard: when the length being measured is expressed as distance between two surface this is
called as end standard . slip gauges , length bars are used in shops . they are time consuming in use .
they prove only one dimension at time .
End standard: when the length being measured is expressed as distance between two surface this is
called as end standard . slip gauges , length bars are used in shops . they are time consuming in use .
they prove only one dimension at time .
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