This document, which is intended as a guide for work force preparation program providers, details the Illinois occupational skill standards for programs preparing students for employment in occupations in the mechanical drafting cluster. The document begins with a brief overview of the Illinois perspective on occupational skill standards and credentialing, the process used to develop the skill standards, and assumptions underlying the standards. Presented next are skill standards for 23 tasks typically performed by workers involved in mechanical drafting. Each skill standard statement contains the following components: (1) the actual skill standard (including the conditions of performance, work to be performed, and performance criteria); (2) performance elements and assessment criteria; and (3) a recommended assessment and credentialing approach. The following are among the tasks for which skill standards are provided: measure using scales; draw geometric constructions; reference information from available sources; create a computer-aided drafting (CAD) model; and analyze CAD models. The following items are appended: glossary; list of Illinois Occupational Skill Standards and Credentialing Council members; list of Transportation, Distribution, and Logistics Subcouncil members; list of Mechanical Drafting Cluster Standards Development Committee members; Transportation, Distribution, and Logistics Subcouncil Mechanical Drafting Cluster skill standards recognition proposal; and list of necessary workplace skills. (MN)