snap gage การใช้

• This may be referred to as a snap gage or an indicating micrometer and may be quickly preset for short runs of parts.
• The first go / no-go snap gage for checking thread rolls was invented in 1943 to speed production of parts during WWII.
• Unlike a snap gage, these measure inside ( bore ) dimensions, not outside dimensions, and are usually reset for each part measured.
• Some vendors who resell a different measuring instrument, bore gauge, muddy the waters by referring to them as snap gages, unlike the manufacturer who uses the correct nomenclature.