Love this ruler-guide. I have another company jig for cabinet handles (the blue brand that sounds like greg), but it is limited to traditional size of hole spacing. My cabinets have larger (longer) handles that don't fit the other jig. Getting this adjustable T-Square does a great job at extending the size of the handles. Additionally, the spacing is better with the Preciva because the greg is pre-jigged to certain sizes and could not do different offsets (it was like the greg was based on 1/8" offsets) forcing into grooves that were not in alignment with my handles.
The handles were one part, but then I had to help a friend with a different problem. We were hanging a sun-shade off the side of his pergola, and needed to have a consistent offset. This T-Square was perfect for the job.
A simple tool and setup that has already paid itself off.
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Preciva 4-in-1 Adjustable T Square Ruler - 14"/35cm Multifunctional Drilling Guide & Layout Tool for Cabinets | Precision Marking, Hole Punching, Level & 30/45/60/75/90° Angles | Dual Scales
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Material | Aluminum |
Brand | Preciva |
Colour | Black |
About this item
- 4-in-1 Woodworking Tool: Combines a T square ruler, drill guide, angle finder, and dual-axis spirit level. A practical multi-tasking solution for woodworking, construction, shop projects, and DIY tasks.
- Accurate Drilling & Marking: Features three adjustable locating blocks for straight holes and precise marking. Helpful for door handle installation, shelf pin placement, and cabinet hardware setup.
- Built-in Dual-Axis Level: Combination Square has built-in integrated horizontal and vertical spirit level to help check level and plumb during drilling or installation tasks.
- Adjustable Measurements: The knob on the woodworking square allows for customized length settings and angle adjustments (e.g. 30/45/60/75/90°). Makes measuring more flexible.
- Sturdy and Durable: Carpenter square is made of aluminum alloy with engraved laser calibrated dual scales (metric + 1/16" imperial). Scale is precise, clear, easy to read and scratch resistant.
- Customer Support: Contact us for assistance with product use or concerns. Our dedicated team provides prompt solutions to ensure your satisfaction.
Product details
- Parcel Dimensions : 44.2 x 6.2 x 5.89 cm; 531 g
- Date First Available : May 9 2025
- Manufacturer : Preciva
- Place of Business : Preciva
- ASIN : B0F484S4SN
- Manufacturer reference : SR45001
- Country of origin : China
- 鶹 Rank: #41,078 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement)
- #40 in Construction Rulers
- Customer Reviews:
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This item: Preciva 4-in-1 Adjustable T Square Ruler - 14"/35cm Multifunctional Drilling Guide & Layout Tool for Cabinets | Precision Marking, Hole Punching, Level & 30/45/60/75/90° Angles | Dual Scales
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Product Description

4-in-1 Woodworking Tool
Combines a T square ruler, drill guide, angle finder, and dual-axis spirit level.







Adjustable Measurements
The knob on the woodworking square allows for customized length settings and angle adjustments.


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Customer reviews
4.1 out of 5 stars
4.1 out of 5
6 global ratings
- 5 star4 star3 star2 star1 star5 star48%32%0%20%0%48%
- 5 star4 star3 star2 star1 star4 star48%32%0%20%0%32%
- 5 star4 star3 star2 star1 star3 star48%32%0%20%0%0%
- 5 star4 star3 star2 star1 star2 star48%32%0%20%0%20%
- 5 star4 star3 star2 star1 star1 star48%32%0%20%0%0%
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Reviews with images

5 out of 5 stars
More helpful than a bigger name brand, and than I expected
Love this ruler-guide. I have another company jig for cabinet handles (the blue brand that sounds like greg), but it is limited to traditional size of hole spacing. My cabinets have larger (longer) handles that don't fit the other jig. Getting this adjustable T-Square does a great job at extending the size of the handles. Additionally, the spacing is better with the Preciva because the greg is pre-jigged to certain sizes and could not do different offsets (it was like the greg was based on 1/8" offsets) forcing into grooves that were not in alignment with my handles. The handles were one part, but then I had to help a friend with a different problem. We were hanging a sun-shade off the side of his pergola, and needed to have a consistent offset. This T-Square was perfect for the job. A simple tool and setup that has already paid itself off.
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Top reviews from Canada
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- Reviewed in Canada on July 21, 2025Verified Purchase5.0 out of 5 starsLove this ruler-guide. I have another company jig for cabinet handles (the blue brand that sounds like greg), but it is limited to traditional size of hole spacing. My cabinets have larger (longer) handles that don't fit the other jig. Getting this adjustable T-Square does a great job at extending the size of the handles. Additionally, the spacing is better with the Preciva because the greg is pre-jigged to certain sizes and could not do different offsets (it was like the greg was based on 1/8" offsets) forcing into grooves that were not in alignment with my handles.
More helpful than a bigger name brand, and than I expected
Reviewed in Canada on July 21, 2025
The handles were one part, but then I had to help a friend with a different problem. We were hanging a sun-shade off the side of his pergola, and needed to have a consistent offset. This T-Square was perfect for the job.
A simple tool and setup that has already paid itself off.
Images in this review
- Reviewed in Canada on June 29, 2025Verified PurchaseThis is a useful square for many things. It is overall solid build, with the main components made out of metal. The built in levels, adjustable positioning of both rulers, and the sliding lockable drill guides you're sure to find lots of uses for this. I would suggest using the drill guides for just starting your holes as the aluminum is probably prone to wear out if you aren't careful, but if you are I'm certain it will last for a long time.
This is a useful square for many things. It is overall solid build, with the main components made out of metal. The built in levels, adjustable positioning of both rulers, and the sliding lockable drill guides you're sure to find lots of uses for this. I would suggest using the drill guides for just starting your holes as the aluminum is probably prone to wear out if you aren't careful, but if you are I'm certain it will last for a long time.
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Top reviews from other countries
- Oh Yes I Wood 2Reviewed in the United States on July 1, 2025
4.0 out of 5 stars T square with a few tricks
So what I like about this particular tool, it definitely will do some things that none of my other T squares will do. You can lineup furniture knobs, drawer handles and any number of other holes that need to be aligned. It can be set to any angle between zero and 180° and has a nice positive lock at the 90° position. Each drill guide will accommodate two different size bits or a slim line carpenters pencil. The main body ruler does have tabs so you can slip it onto the edge of your workpiece without it tipping from side to side.
What I don't like, plastic pieces. The drill guides, the level mounts and the end caps are all made of plastic. Also, the actual holes in the guides themselves are aluminum inserts as are the knobs used to tighten them up. This will definitely cut down on a longevity although this will not probably get used as much as my other squares. It does have standard and metric measurements, always a big win with me.
Oh Yes I Wood 2T square with a few tricks
Reviewed in the United States on July 1, 2025
What I don't like, plastic pieces. The drill guides, the level mounts and the end caps are all made of plastic. Also, the actual holes in the guides themselves are aluminum inserts as are the knobs used to tighten them up. This will definitely cut down on a longevity although this will not probably get used as much as my other squares. It does have standard and metric measurements, always a big win with me.
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- editortrReviewed in the United States on July 1, 2025
5.0 out of 5 stars Quite a busy tool - very accurate
I have an older ruler that was a gift from an old friend a while ago. It has a black base with a steel ruler with scales on one side and angles on the other. So you use it by setting up the angle on the back with the scale on the front. Grooves with magnets hold the ruler on a precise angle while you use the front to draw reference lines.
This item is similar although the angle reference lines are not embedded so they might be a little off. The 90 degree reference is secured by slots on the two arms so that's a plus. It appears to be a well made tool and useful for anyone that needs precise measurements. It will be a useful tool at a great price.
- Verified UserReviewed in the United States on July 10, 2025
2.0 out of 5 stars Good for a DIY. Not good for daily profession.
This will be helpful in alignment for handles, knobs and hinges but it’s by no means a very high quality. The relief notches to snug the two halves together are not wide enough to evenly secure them. For a 1x DIYer, this may suffice but I would not recommend this for someone who will be doing repeat projects.
Verified UserGood for a DIY. Not good for daily profession.
Reviewed in the United States on July 10, 2025
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- KimoReviewed in the United States on July 5, 2025
4.0 out of 5 stars Quality aluminum t-square ruler, should last a long time.
I have wanted a quality t square ruler for a while, and I am very happy with this one. I have had some bad versions in the past that were made of plastic, so I was looking for a metal/aluminum version. The Preciva square ruler is 99% aluminum, with plastic ends, and is easy to adjust too your needs. It seems it is targeted towards cabinet work, but it has so many possible uses, one of my favorite for hanging pictures, and finding angles prior to cutting 2x4's.
KimoQuality aluminum t-square ruler, should last a long time.
Reviewed in the United States on July 5, 2025
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