@book{84214,
	author = {Unknown},
	title = {Measuring Tools},
	publisher = {Project Gutenberg,},
	year = {2013},
	series = {Machinery's Reference Series Number 21},
	address = {Salt Lake City, UT :},
	note = {Release date is 2013-08-01},
	url = {https://www.gutenberg.org/ebooks/43375}
}