Different rulers types?

[IREFUSE]

Whats the difference from theses rulers

Metric ruler

English Ruler

Machinist Rule

Standard ruler

 

[rgd1101]

they measure different scale

 

[InvalidError]

A metric ruler explicitly includes a metric scale (millimeters, centimeters, meters), an imperial/English ruler uses inches and feet, a machinist ruler is typically made of steel for wear resistance with low temperature coefficient to maintain accuracy across a wide temperature range and may have either/both metric and imperial scales.

A "standard ruler" is whatever the vendor deems standard, usually a cheap plastic or wood ruler with either metric or imperial scales, often both.