The lightweight paperback edition (or the ebook version on a laptop) provides International travellers with a fascinating and unusual reference source for International Units.
Don't just think that this book is only an essential book for High School students around the World.
By the end of their trip after browsing through this book travellers will have enriched their vocabulary and discovered hundreds of International symbols.
Find the unit for reluctance. Find out the nationalities of the scientists whose surnames have been used for International Units.
Have a good flight.