Johnson Adjustable Drywall Square #40-500

Johnson Adjustable Drywall Square – Model ADS48 (40-500)

The Johnson Adjustable Drywall Square (ADS48) offers unmatched flexibility and precision for drywall layout, cutting, and marking. Its adjustable head can be locked at 90° or set to any angle, making it ideal for custom cuts and irregular layouts. Built from heat-treated aluminum with durable graduations, this tool is designed for professional performance and long-term reliability.

Features:

  • Adjustable head locks at 90° or moves freely to any angle

  • Heavy-duty extruded aluminum blade and head (¼" thickness) for rigidity and strength

  • Easy-to-read thermal-bonded graduations: 1/8" and 1/16"

  • Etched markings for common angles (e.g. 30°, 45°, 60°, 75°)

  • Anodized finish resists rust and corrosion

  • Blade doubles as a straightedge for cutting lines

  • Folds flat for compact transport and storage

Specifications:

  • Blade length: 48"

  • Graduation increment: 1/8" / 1/16"

  • Material: Heat-treated aluminum

  • Finish: Anodized coating

Typical Uses:
Perfect for drywall layout, drawing cut lines, marking on sheet goods (drywall, plywood, OSB), and framing tasks with angled cuts. The adjustable head adds versatility for vaulted ceilings, angled joints, and complex layouts.

Availability:
Model ADS48 is stocked and available for pickup or delivery.