Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
6.3
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
7233
Points per Word
0.000138
Page Count
48
Points per Page
0.020833
Series
Crafty Inventions
Description
This book provides an illustrated history of underwater machinery, including diving apparatus and submarines.