Looking for a portable tool that can measure level and find plumb lines? This triangular ruler combines a plumb line with a horizontal scale, allowing you to quickly establish vertical reference by hanging the string and precisely measure horizontal deviations using its scale—making it an indispensable handy helper for DIY projects and installation tasks.
One tool, two functions: measures both plumb and level
Plumb-line positioning: After suspending a thin cord, you can swiftly identify a vertical reference, solving the common problem of “difficulty in determining true vertical”;
Level measurement: The horizontal scale on the ruler (spanning ±50 degrees) lets you accurately read horizontal deviation values, eliminating the need to carry a separate spirit level—this single tool handles both measurement needs.
Compact and convenient, easy to use anywhere without taking up much space
This mini tool comes in the form of a triangular ruler: small in size and lightweight, it easily fits into your toolbox or pocket. Whether you’re assembling parts by hand, installing furniture, or aligning walls, you can quickly grab it for fast measurements.

PS: To install the plumb-and-level tool, simply align it vertically at the hook attachment point, then hang a weight that keeps the string perfectly vertical.