There is no marking with W1 / 2 volts or quarter bolts at 21 mm.
As measured with this product "It is about 19 mm, probably M12 volts?" Seems to be used.
In other words, the scale is not a conversion table, it only shows actual measurement values.
In addition, in an environment where milli and inch are mixed, there is no way to distinguish by mere sense,
I think that it is the same with a simple vernier caliper like this one.
It is a convenient item for American car users who confuse milli and inch size. Although the movement of the slide part may be impossible, it is a level that you do not mind if you think that it is a key holder with additional functions.
Used to measure the diameter of bolt and nut Key holder
On 2011-05-27 11:02:47
It is convenient because inch and millimeter size can be measured, convenient, because the slider that makes gauge is hard so we can not measure it hard even if it is soft so I want you to design so that the gap dimension and slip are good. I am using it for a key holder