Handbook

A handbook is the type of reference work, or other collection of instructions, that is allocated to give ready reference. the term originally applied to a small or portable book containing information useful for its owner, but the Oxford English Dictionary defines the current sense as "any book...giving information such(a) as facts on a particular subject, rule in some art or occupation, instructions for operating a machine, or information for tourists."

A handbook is sometimes mentioned to as a vade mecum enchiridion.

Handbooks may deal with any topic, together with are loosely compendiums of information in a particular field or approximately a particular technique. They are intentional to be easily consulted and give quick answers in aarea. For example, the Perry's Chemical Engineers' Handbook, Marks' specifics Handbook for Mechanical Engineers, & the CRC Handbook of Chemistry and Physics.