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Half-rectangle triangles (HRTs) are like the elegant cousin of the half-square triangle: versatile, dynamic, and just a little more fussy. Unlike HSTs, HRTs donât split perfectly down the center, so precision is keyâand thatâs where the right ruler makes all the difference.
There are three main types of HRT rulers: Trimming Tools, Cutting Tools, and All-in-Ones. Whether youâre a precision piecer or just trying to avoid that wonky block life, hereâs a closer look at how they stack up.
These rulers are designed to square up your HRT units after sewing, ensuring crisp points and perfect sizing. Youâll need a separate ruler or method to cut your initial triangles.
Bloc Loc HRT Ruler Set (2:1 & 3:1 ratios)

âď¸ Built-in groove locks onto the seam for super-fast trimming
âď¸ Sold in a set for left slanting HRTs and right slanting HRTsÂ
â ď¸ Most expensive option on this list and must be paired with a separate cutting ruler
đĄ Great if you already love Bloc Locâs groove system
Creative Grids Half Rectangle Trim Tool (2:1 ratio)

âď¸ One tool for both left- and right-leaning units
â ď¸ Requires a separate cutting ruler
â ď¸Â Grid Lines take some getting used to
đĄ Non-slip grip is helpful for quick trimming
These tools are used to cut your triangles before sewing. After assembly, youâll still need a trimming tool to square everything up.
Creative Grids Perfect Rectangle Ruler (2:1 ratio)

âď¸ Makes cutting mirror-image triangles a breeze
â ď¸ Trimming required after sewing
â ď¸ Cutting instructions start with a smaller base sized rectangle than all other tools on this list leaving less room to square up at the end. Size up for room to trim.
đĄ Can also be used for chevron or kaleidoscope designs
Quilterâs Select Twin Set 60° Rulers (2:1 ratio)
âď¸ Cuts both left- and right-leaning triangles
â ď¸ Requires a separate trimming tool

đĄ Good choice if you already own a trimming ruler
These rulers handle both cutting your triangles and trimming the final unitâsaving time and reducing tool clutter. While the up-front price is higher, theyâre often more economical than buying separate cutting and trimming rulers.
Deb Tuckerâs Split Rects Tool

âď¸ Cuts and trims HRTs in multiple sizes
â ď¸ Has a steeper learning curve than other options
đĄ Ideal for precision piecing and intermediate/advanced quilters
HuRTy 1 by Latifah Saafir Studios (2:1 and 6:1 ratios)
âď¸ Cutting and trimming in one tool for both directions
â ď¸ Premium price point
đĄÂ Easy to read color-coded markings

đĄ Online training videosÂ
đĄ Offers unique 6:1 ratio not found in most other tools
HuRTy 2 (3:1 and 3:2 ratios)
âď¸ All-in-one tool for uncommon ratios
â ď¸Â Premium price point
đĄ Excellent for modern and improv layouts
HuRTy 3 (4:1 and 4:3 ratios)
âď¸ Includes rare ratios with high precision
â ď¸Â Premium price point
đĄ Best for adventurous piecers working with non-standard blocks
| Ruler | Category | Trims? | Cuts? | Price | Ease of Use | Sold at WVQ? |
|---|---|---|---|---|---|---|
| Bloc Loc HRT Set | Trimming Only | â | â | $$$$ | âââââ | No |
| CG Half Rectangle Trim Tool | Trimming Only | â | â | $$ | ââââ | Yes |
| CG Perfect Rectangle | Cutting Only | â | â | $$ | ââââ | Yes |
| Quilterâs Select Twin Set | Cutting Only | â | â | $$$ | ââââ | Yes |
| Deb Tucker Split Rects | All-in-One | â | â | $$ | âââ | No |
| HuRTy 1 | All-in-One | â | â | $$$ | âââââ | Yes |
| HuRTy 2 | All-in-One | â | â | $$$ | âââââ | Not Yet |
| HuRTy 3 | All-in-One | â | â | $$$ | âââââ | Not Yet |
Thereâs no one-size-fits-all ruler for HRTsâbut knowing what kind of piecer you are helps narrow it down.
We stock several of these rulers at West Valley Quiltingâclick here to shop.
Have questions about which ruler is right for you? Send us a message on Facebook, Instagram, or email us at info@westvalleyquilting.comâweâre happy to help!