This module on the purpose and use of the serger machine, one in a series on clothing construction for industrial sewing machine operators designed for student self-study, contains nine sections. Each section includes the following parts: an introduction, directions, an objective, learning activities, student information, student self-check, check-out activities, and an instructor's final checklist. The sections cover the following topics: purpose of the machine and serging edge of cloth, serging a seam, setting blouse/shirt cuffs, setting a tailored cuff, setting a sleeve, making a tie belt, setting elastic, hemming sleeves, and setting ruffles. The material is illustrated with line drawings. (KC)