Klein Tools 935AB4V Magnetic Level – Weather-Ready Pocket Tool for Outdoor Pipe Runs and Rooftop HVAC
Klein Tools 935AB4V Magnetic Level – Weather-Ready Pocket Tool for Outdoor Pipe Runs and Rooftop HVAC
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Why you'll love it
- Patented magnet track keeps rare-earth magnets from falling out, protecting the investment and the jobsite
- Thumb screw frees both hands so the user can read the vial while actively bending conduit
- Four vials (0/30/45/90) cover every standard bend offset a bender needs in one compact tool
- High-visibility orange body is impossible to lose in conduit racks, scissor lifts, or dirt
- Klein's 160-plus-year reputation signals a tool built to survive daily professional abuse
- V-groove hugs round stock so the level stays put on pipe and conduit without sliding
Perfect for
- Bending conduit at precise 30, 45, and 90 degree offsets without dog legs
- Measuring slope angle on drainage pipe while hands are occupied with a bender
- Hands-free level checks on steel strut, junction boxes, and metal studs
- Verifying plumb and level of panel boards and electrical enclosures during install
- Pocket-carrying a go-to reference level between tasks on a busy jobsite
About Klein Tools
As an American manufacturer of hand tools for more than 160 years, Klein Tools makes premium-quality, professional-grade tools that deliver performance, durability and precision. Our team continues to put six generations of expertise into each tool by using the highest quality materials and superior workmanship.
Klein Tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day … Since 1857.
Level, 6-Inch Magnetic Torpedo and Conduit Level with 0/30/45/90 Degree Vials, V-Groove and Magnet Track, High Visibility Orange
The Klein Tools 6.25-Inch Accu-Bend Aluminum Billet level is designed for effective leveling on and off the construction site. The patented Magnet Track keeps the powerful Rare-Earth magnets secure and ensures that they won't fall out. This leveler also includes large, easy-to-read vials and vial windows for easy viewing at any angle
- Level with patented magnet track prevents powerful Rare-Earth magnets from falling out
- Thumb screw attaches level to conduit to measure angle while bending
- Large, easy-to-read high-visibility vials at 4 angles: level, 90, 45, and 30 degrees
- Large top-view vial windows enable easy readability from multiple angles
- High-visibility orange professional grade billet aluminum body is easy to see on conduit and at the jobsite
- V-Groove fits contour of conduit and pipe
- US Patent 9,964,407
FEATURES
Level eliminates dog legs in conduit and pipe while bending
Conduit Level with high-visibility orange body is easy to see
Aluminum Torpedo Level has 4 vials with +/- 0.029° accuracy
Product Information
PATENTED MAGNET TRACK: Level features a patented magnet track that prevents powerful Rare-Earth magnets from falling out during use THUMB SCREW ATTACHMENT: Thumb screw allows for easy attachment of the level to conduit, enabling measurement of angles while bending EASY-TO-READ VIALS: Large, high-visibility vials at 4 angles (level, 90, 45, and 30 degrees) ensure easy and accurate readings TOP-VIEW VIAL WINDOWS: Large top-view vial windows provide convenient readability from multiple angles HIGH-VISIBILITY ORANGE BODY: Professional-grade billet aluminum body in high-visibility orange is easily visible on conduit and at the jobsite V-GROOVE DESIGN: The level's V-groove is designed to fit the contour of round surfaces like conduit and pipe more securely TAPERED NOSE: The level's tapered nose makes it easy to push into pockets, ensuring convenient storage and accessibility
Klein's ACCU-BEND Magnetic Level helps eliminate dog legs and make conduit bending easier. Powerful Rare-Earth magnets with patented magnet track secure the level to any metal surface. The thumb screw attaches level to conduit to measure angles while bending. Large top-view vial windows are easy to ready from a variety of angles. High-visibility orange makes this level easy to find on the job site. For more than 160 years, Klein Tools has manufactured premium-quality, professional-grade hand tools that deliver the performance, durability and precision needed to get the job done right. Our family of engineers, workers and craftsman continue to put six generations of expertise into every tool we create by using only the highest quality materials, superior workmanship, and keeping manufacturing as close to home as we can. Klein isn't just the name of our company, it's also our family name. And since we're an American company that's family-owned and family-run, you know you can count on us to be here tomorrow. Klein Tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day ... Since 1857.
Frequently Asked Questions
Will the 935AB4V hold up on outdoor pipe runs and trench work?
Yes. The billet aluminum body and powder-style finish handle dirt, mud, and the temperature swings you see on exterior pipe runs and trench work. After a muddy day, a quick rinse and wipe-down is enough to keep the vials readable and the magnet track clean.
Can the magnets hold the level on outdoor steel strut or rooftop HVAC frames?
They can. The rare-earth magnet track is strong enough to hold the level on galvanized strut, rooftop unit frames, and condenser housings. This is the configuration most HVAC techs use when checking line set slope on a roof.
Will the high-visibility orange help when the level is set down in grass or dirt?
It will. The orange body stands out against grass, gravel, dirt, and rooftop surfaces, which is exactly when a black or chrome torpedo tends to walk away. It is one of the small reasons the level is popular on landscaping and irrigation crews too.
Is the level accurate enough for outdoor drainage slope work in direct sunlight?
Yes. The vials are sealed against UV and the green bubble reads cleanly in direct sun. For long runs you should still verify with a transit or laser because pocket levels are a reference, not a surveying instrument, but for short drainage checks the 935AB4V is reliable.
Does the V-groove help on uneven outdoor terrain like a sloped yard or ditch?
It does. On round stock the V-groove self-centers the level so you can read slope even when the pipe itself is on an uneven grade. The tapered nose also lets you fish the level out of a shallow trench without scraping your knuckles.
Can I use this level to set a small irrigation or landscaping project?
It works well for short irrigation laterals, shed foundations, and landscape drainage runs. For longer irrigation mainlines you will want a laser or a transit, but the 935AB4V is a solid pocket reference for the small outdoor jobs around a property.
Will the level rust or corrode if I leave it on an outdoor pipe overnight?
The aluminum body and the rare-earth magnets are chosen for jobsite durability, including overnight dew and rain. A quick dry-off and storage in a pouch or tool bag the next morning will keep the finish and calibration in good shape long term.
Is the level comfortable to use while wearing work gloves outdoors?
Yes. The thumb screw is sized to turn with a gloved thumb, and the body has enough flat surface to grip with cold or wet gloves. The high-visibility orange also helps you spot the level through glove smudges and dust.
Does the level survive jobsite temperature swings from attic heat to winter outdoor work?
The billet aluminum body and the vial fluid are rated for the temperature range a tradesperson will see across attic, rooftop, and winter exterior work. Like any precision level, you should let it acclimate for a minute before trusting the reading in extreme cold.
Can I use the 935AB4V on an outdoor generator, condenser pad, or equipment mounting?
Yes. The magnetic track lets you shim and level steel equipment mounts hands-free, and the 0/90 vials are the standard for setting a pad square before anchoring. It is a common field tool for HVAC and generator installers for exactly this reason.
How do I check calibration on the Klein 935AB4V before I start a job?
Set the level on a flat surface, note the bubble, then rotate the level 180 degrees on the same surface. If the bubble settles in the same position, the 0 degree vial is calibrated. Repeat the flip test on a known plumb surface to verify the 90 degree vial.
How do I attach the level to conduit for a hands-free bend?
Seat the V-groove against the conduit, snug the thumb screw until the level is locked to the pipe, and read the vial directly. Release the thumb screw to move the level between offset, rolling offset, and saddle positions.
What is the best way to store the level so the magnets stay strong?
Store the level in a tool bag, pouch, or drawer away from constant heat sources, and keep the magnet track free of metal shavings. Wiping the track with a dry cloth at the end of the day protects both the magnets and the calibration.
Does this level work with both EMT and rigid conduit sizes?
Yes. The V-groove seats cleanly on EMT from 1/2 inch up to 1-1/4 inch and on standard rigid conduit, and the thumb screw bites into the larger sizes for hands-free bending.
Will the magnets work on stainless steel or aluminum enclosures?
Rare-earth magnets do not grip non-ferrous metals like stainless steel or aluminum, so on those surfaces you will want to use the V-groove or the thumb screw rather than relying on the magnetic track.
What is included in the box when I order the 935AB4V?
The level ships in Klein retail packaging with the 6-inch magnetic torpedo level itself. No batteries, calibration certificates, or accessories are required, and there is nothing to assemble out of the box.
How durable is this level under daily jobsite abuse?
The billet aluminum body is built to survive drops onto concrete, scuffs in tool bags, and the temperature swings of attic and rooftop work. Like any precision level, a hard impact can knock calibration off, so it is worth re-checking after any serious fall.
Is the level waterproof or just water resistant?
The level is built to handle rain, dew, and jobsite washdowns, but it is not a sealed submersion-rated instrument. After heavy exposure, dry it off and store it in a pouch to keep the vials clear and the magnet track clean.
What is the difference between a torpedo level and a standard box-beam level?
A torpedo level is a short, pocket-sized level designed for layout, bend angles, and pipe work, while a standard box-beam level is a longer 24 to 48 inch level used for framing, cabinetry, and long runs. The 935AB4V is a torpedo built specifically for the bending offsets a tradesperson hits all day.

