An International Correspondence Schools-style instruction paper (Serial 492, Section 57) on setting up, adjusting and maintaining power looms in a mill weave room. It covers erecting looms, tying in warps, and setting the shed, harness cams, lease rods, warp line, picking cams, lug straps, pickers, binders, shuttles, protector and filling stop-motions, temples, and let-off and take-up motions. Later sections troubleshoot banging off, shuttles flying out, thin places, filling kinks and cut filling, and warp defects such as poorly sized yarn and knots, and close with the duties of the loom fixer. Two diagrams illustrate the warp line and shed.