Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
6.1
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
4039
Points per Word
0.000248
Page Count
48
Points per Page
0.020833
Series
Household History
Description
Discusses the history and technical development of the vacuum cleaner, from the first carpet sweepers of the nineteenth century to twentieth-century improvements.