Introduction to the Multi-Functional Four-Fold Protractor

This is a multi-functional four-fold protractor (also known as an adjustable four-fold ruler or universal positioning ruler), a practical measuring tool widely used in carpentry, interior decoration, and DIY projects.

Key Features

Structural Design: It consists of four plastic ruler segments with sliding slots, connected by three adjustable pivots equipped with knobs. Once the knobs are tightened, any angle or shape can be securely locked in place.

Modular Assembly: The length is freely adjustable, and the number of segments can be customized, enabling limitless creative possibilities through 3D printing.

Material: Made from PETG or ABS, which are lightweight and wear-resistant; an aluminum alloy version is also available for enhanced durability.

High Flexibility: The ruler can be folded into any quadrilateral, triangle, or irregular shape, accurately replicating on-site angles and contours.

Main Applications

Angle Measurement and Replication: Quickly measure irregular angles on walls, tiles, wood, and other surfaces; once locked, the angle can be precisely reproduced on the material.

Positioning for Hole Drilling: Used in conjunction with tile or woodworking hole-saws to accurately mark and drill holes at irregular locations.

Template Creation: Used to create measurement templates for complex structures such as staircases, sloped roofs, and custom-shaped tiles.

Line-Drawing Assistance: Serves as a temporary straightedge to help draw parallel lines and angular lines.

Typical Application Scenarios

During tile installation, measure and replicate the irregular angles of wall corners and window sills.

In carpentry, replicate the angles of sloping beams and stair treads.

For DIY projects and model-making, quickly determine the dimensions of irregular shapes.

Please refer to the image details for required accessories