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- ISO_1 abstract "ISO 1 is an international standard that specifies the standard reference temperature for geometrical product specification and verification. The temperature is fixed at 20 °C, which is equal to 293.15 kelvins and 68 degrees Fahrenheit.Due to thermal expansion, precision length measurements need to be made at (or converted to) a defined temperature. ISO 1 helps in comparing measurements by defining such a reference temperature. The reference temperature of 20 °C was adopted by the CIPM on 15 April 1931, and became ISO recommendation number 1 in 1951. It soon replaced worldwide other reference temperatures for length measurements that manufacturers of precision equipment had used before, including 0 °C, 62 °F, and 25 °C. Among the reasons for choosing 20 °C was that this was a comfortable and practical workshop temperature and that it resulted in an integer value on both the Celsius and Fahrenheit scales.".
- ISO_1 wikiPageID "14949437".
- ISO_1 wikiPageRevisionID "602659438".
- ISO_1 hasPhotoCollection ISO_1.
- ISO_1 subject Category:ISO_standards.
- ISO_1 subject Category:Quality_control.
- ISO_1 subject Category:Temperature.
- ISO_1 comment "ISO 1 is an international standard that specifies the standard reference temperature for geometrical product specification and verification. The temperature is fixed at 20 °C, which is equal to 293.15 kelvins and 68 degrees Fahrenheit.Due to thermal expansion, precision length measurements need to be made at (or converted to) a defined temperature. ISO 1 helps in comparing measurements by defining such a reference temperature.".
- ISO_1 label "ISO 1".
- ISO_1 label "ISO 1".
- ISO_1 label "ISO 1".
- ISO_1 label "ISO 1".
- ISO_1 label "ISO 1".
- ISO_1 label "ISO 1".
- ISO_1 label "أيزو 1".
- ISO_1 sameAs ISO_1.
- ISO_1 sameAs ISO_1.
- ISO_1 sameAs ISO_1.
- ISO_1 sameAs ISO_1.
- ISO_1 sameAs ISO_1.
- ISO_1 sameAs ISO_1.
- ISO_1 sameAs m.03h2t41.
- ISO_1 sameAs Q2457552.
- ISO_1 sameAs Q2457552.
- ISO_1 wasDerivedFrom ISO_1?oldid=602659438.
- ISO_1 isPrimaryTopicOf ISO_1.