The phrase refers to a visual reference document, typically in Portable Document Format, that displays common wrench dimensions and includes a specific size, five thirty-seconds of an inch. This document can be printed for convenient access. Such a chart provides a quick and easy way to identify the correct wrench for a particular fastener.
Access to standardized wrench size information provides multiple advantages. It streamlines tasks requiring wrench usage, reduces the likelihood of selecting the incorrect tool (which can damage fasteners), and improves overall efficiency. Historically, machinists, mechanics, and other tradespeople relied on physical charts and handbooks; the advent of digital documents allows for portability and ease of access, especially in environments where digital devices are permitted.
Subsequent sections will explore the typical content of these charts, delve into the different types of wrenches represented, and address common considerations when using and selecting such a resource.
