This is a drawing of a pattern diagram for garment construction. The image shows a detailed, technical drawing of a garment pattern with annotations and labels. It includes rectangular shapes, lines, and numbers that correspond to specific parts and measurements of the garment. The drawing features labels like "Back Lining," "Under Arm Piece," and "Side Back," as well as operational notes such as "Place Fold Here" and "Stitch Mark." The diagram provides guidance for assembling the garment pieces, emphasizing precise measurements and alignment.