Adjustable Protractor 180° Measuring Square 15cm Hollow and 14.5cm Solid for Geometry and Drawing

This adjustable protractor offers a practical solution for measuring and marking angles up to 180° with a clear scale and 1° accuracy. Ideal for school maths classes, engineering drawing, or general drafting tasks, it provides reliable angle measurement without complicated setup. The tool is available in two size options: a 15cm hollow-large version and a 14.5cm solid version, giving you flexibility based on your preferred feel and visibility. Whether you are a student learning geometry or a professional needing a quick angle check, this protractor delivers straightforward functionality.

Features and Construction

The protractor is designed for ease of use and accurate measurement. Its adjustable arm allows you to set and read angles directly from the 0-180° scale, with increments marked at 1° for precise work.

Material and Build

The protractor is made from standard plastic materials typical of school and drafting geometry tools. The 15cm hollow-large version has open sections to reduce weight, while the 14.5cm solid version offers a more conventional feel without a trademark imprint. Both are suitable for regular handling in classroom or workshop settings.

Size and Practical Fit

The two size options—15cm (hollow-large) and 14.5cm (solid)—give you a choice based on your workspace or personal preference. The 15cm hollow model is lighter and may be easier to see through, while the 14.5cm solid model provides a more compact, sturdy profile for everyday use.

Uses and Placement

This adjustable protractor is designed for direct angle measurement and marking across multiple settings. Its simplicity makes it a practical addition to any geometry kit or drafting set.

Event or Professional Use

Engineers, architects, and technical illustrators can use this protractor for quick angle checks on drawings or blueprints. The 1° accuracy supports standard drafting requirements, and the adjustable arm speeds up repetitive angle measurement tasks.

Everyday Home Use

For home DIY projects, craft work, or helping children with maths homework, this protractor provides a clear, simple way to measure angles. Its lightweight design makes it easy to store in a pencil case or tool drawer for when you need it.

Benefits and Buying Value

The adjustable protractor offers practical value through its dual-size availability and straightforward functionality. It meets common angle measurement needs without unnecessary complexity.

Reuse and Low Maintenance

As a durable plastic tool, this protractor can be reused many times across different projects. It requires no special maintenance—just keep it clean and store it away from sharp objects to preserve its scale accuracy.

Why Choose This Product

You get a choice of two size options in one product listing, allowing you to pick the best fit for your use. The 180° range and 1° accuracy cover most geometry and drawing tasks, making it a versatile, budget-friendly addition to your tool collection.