Digital display inclinometer level protractor angle gauge with magnetic base for 90 degree and 180 degree range measurements featuring 0.05° resolution and 0.2° accuracy in plastic ABS construction for workpieces and machinery
Digital Magnetic Inclinometer with 0.05° Resolution for 90° and 180° Angle Measurement

This digital inclinometer combines a practical magnetic base with a high-resolution digital display to deliver precise angle and slope measurements on metallic work surfaces. It addresses the need for accurate, hands-free level checking in workshops, on machinery, and during fabrication, replacing less reliable bubble levels or manual protractors. The tool's core benefit is its ability to lock onto ferrous materials, freeing your hands while providing clear digital readouts of angles from 0° to 180° with a resolution as fine as 0.05°. Designed for professionals and DIY enthusiasts, its portable format and functional range make it a versatile addition to any measurement toolkit.
Features and Construction

The HW300 series inclinometer is built around a clear digital interface and a functional magnetic mounting system. Its design prioritises stable attachment and legible data in various workshop lighting conditions.
Material and Build
The main housing is constructed from plastic ABS, a material chosen for its balance of lightweight properties and impact resistance. This makes the tool suitable for the occasional knocks of a workshop environment without adding significant heft. The construction centres on protecting the internal sensor and display, with external dimensions of 115mm by 42mm by 22mm contributing to a handheld, portable form factor with a net weight of just 56g excluding the battery.
Size and Practical Fit
With compact dimensions of 115x42x22mm, this gauge is easy to store in a toolbox or carry in a pocket. Its size allows it to be used in confined spaces and makes it a practical companion to larger measuring tools, effectively expanding your measurement capabilities. The specified net weight of 56g ensures it adds minimal burden, while the overall packaged size of 120x48x28mm indicates it arrives well-protected for storage or transport.
Uses and Placement

The magnetic base defines this tool's primary use case, but its measurement modes extend its utility across various scenarios where angle precision is required.
Event or Professional Use
In professional settings such as metal fabrication, machining, and machinery installation, the magnetic base allows for secure, hands-free attachment to drill presses, saw tables, weldments, and other ferrous equipment. This enables continuous monitoring of angles during setup or operation. The high 0.2° accuracy and 0.05° resolution support quality control and precise alignment tasks, while features like data locking allow technicians to record a measurement without holding the tool in place.
Everyday Home Use
For home DIY projects, this tool simplifies tasks like setting table saw blades, adjusting mitre saws, checking the pitch of shelves, or levelling appliances on metal stands. The ability to switch between relative and absolute measurement modes means users can zero the tool on any surface to measure the angle of change, or use it to find a true angle relative to horizontal. The slope conversion function is particularly useful for landscaping projects involving ramps or drainage gradients.
Benefits and Buying Value

The value of this digital inclinometer lies in its combination of attachment security, display clarity, and measurement flexibility, all in a single, reusable tool.
Reuse and Low Maintenance
As a digital tool with no consumable parts other than the battery, it is designed for repeated use across many projects. The plastic ABS construction is wipe-clean, and with no complex calibration required beyond normal operation within its 0°C to 40°C range, ongoing maintenance is minimal. Its durability comes from the robust housing protecting the electronic components, making it a long-term replacement for less precise mechanical tools.
Why Choose This Product
This product stands out for its integrated magnetic base, which solves the problem of holding a protractor steady on metal surfaces—a common frustration in metalworking. The high 0.05° resolution provides more detailed feedback than many basic digital angle finders, and the dual measuring ranges (4x90° and 2x180°) cover most common applications. When compared to non-magnetic or analogue alternatives, the combination of secure mounting, digital precision, and functional modes like data locking offers a clear practical advantage for anyone needing reliable angle measurements.


