Laser Plumb Bobs | McMaster-Carr

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28 Products

Automatic Leveling Dot Laser Levels


3 Dots	5 Dots

Set these lasers on any surface, and they'll level themselves within about 4°. Whether you’re hanging a drop ceiling or aligning bench tops, they project accurate level references to make sure your installation will be at the right height. You can also mount them in a few different ways. They have a threaded insert to attach to a tripod (sold separately). Or use the magnetic base, which is strong enough to hold even on vibrating equipment.

Red Laser—Red lasers are best for indoor environments, since they’re dimmer than green lasers.

Green Laser—Green lasers appear up to 10 times brighter than red lasers, making them easier to see outdoors or in bright indoor lighting, as well as from far away.

5 Dots—Lasers with 5 dots help you verify your installation is straight, level, and plumb at the same time. This prevents you from having to reposition the level frequently, so you can work faster.

Strap Mount—Lasers with a strap mount can be secured on poles and ladders.

							Overall				Mounting Holes			Batteries
	No. of Dots	Max. Laser Distance, ft.	Accuracy	Dot Size @ Distance	Laser Class	Wavelength, nm	Lg.	Wd.	Ht.	Mount Type	No. of	Thread Size	Magnet Material	Included	No. Req.	Type	Size	Enclosure Rating	Container Type		Each
Red Laser



		5	100	±1/8" @ 50 ft.	3/16" @ 50 ft.	FDA Class IIIa	625 to 645	5"	2"	5 3/4"	Strap, Screw On, Magnetic Base	2	1/4"-20 5/8"-11	Neodymium	Yes	3	Disposable	AA	IP54	Carrying Case	1986A22	0000000


		Green Laser



				3	125	±1/8" @ 30 ft.	1/16" @ 50 ft.	FDA Class II	500 to 540	4 1/2"	2"	4 1/2"	Screw On, Magnetic Base	1	1/4"-20	Neodymium	Yes	2	Disposable	AA	IP65	Carrying Case	1986A18	000000


				5	125	±1/8" @ 30 ft.	1/16" @ 50 ft.	FDA Class II	500 to 540	4 1/2"	2"	4 1/2"	Screw On, Magnetic Base	1	1/4"-20	Neodymium	Yes	2	Disposable	AA	IP65	Carrying Case	1986A27	000000

Tripods

Ht.	For Mounting Hole Thread Size	Material		Each
16" to 51"	1/4"-20	Aluminum	4098T31	000000

Combination Six Crosshair Line Automatic Leveling Laser Levels

No need to reposition these lasers as you work around your room—crosshairs on every surface give you all the reference points you need. They are a good choice for level, plumb, and square applications, such as aligning doors and windows on multiple walls. If you set them on a surface, they level themselves within about 4° and indicate when they are out of level. You can turn this function off when you want to make sure your crosshair is level with something other than the Earth.

Secure them to a tripod using the threaded mount or use the strong magnetic base to attach them to equipment. They come with a magnetic target, which you can mount in your space to reflect the laser beam to increase its visibility in dim conditions and at far distances.

						Overall						Mounting Holes		Batteries
Laser Color	Accuracy	Max. Laser Distance, ft.	Line Size @ Distance	Laser Class	Wavelength Range, nm	Lg.	Wd.	Ht.	Includes	Mount Type	Mounting Fasteners Included	No. of	Thread Size	Included	Charger Included	Enclosure Rating		Each
Green	±1/8" @ 35 ft.	330	1/8" @ 50 ft.	FDA Class II	510 to 530	5 1/2"	2 5/8"	4 1/2"	Magnetic Target, Wall/Ceiling Mount Bracket	Screw On, Magnetic Base	Yes	1	1/4"-20	Yes	Yes	IP64	7479N11	0000000

Tripods

Ht.	For Mounting Hole Thread Size	Material		Each
16" to 51"	1/4"-20	Aluminum	4098T31	000000

Combination Crosshair Line and Multiple Dot Automatic Leveling Laser Levels


2 Dots	5 Dots (Front View)

5 Dots (Back View)

Level equipment with confidence—in addition to a crosshair, these lasers also project plumb dots, so you know the laser is in the right spot. They’re an upgrade from a standard crosshair laser while remaining simpler than lasers with multiple crosshairs. Use these lasers to precisely install square elements, such as doors and windows. The crosshair extends along your wall, so you don’t have to reposition the laser often as you work around your room. If you set them on a surface, these lasers level themselves within about 4° and indicate when they are out of level. You can turn this function off when you want to make sure your crosshair is level with something other than the Earth.

2 Dots—Levels with two laser dots help you verify your installation is plumb with reference points above and below the tool. These red lasers are best for indoor environments, since they’re dimmer than green lasers.

5 Dots—Levels with five laser dots help you verify that your tool is positioned correctly in multiple dimensions with reference points above, below, behind, and to the sides of the tool without repositioning your laser. These green lasers appear up to 10 times brighter than red lasers, so they’re easier to see outdoors or in bright indoor lighting, as well as from far away.

			No. of				Overall					Mounting Holes		Batteries
	Max. Laser Distance, ft.	Accuracy	Crosshair Lines	Dots	Laser Class	Wavelength Range, nm	Lg.	Wd.	Ht.	Includes	Mounting Fasteners Included	No. of	Thread Size	Included	Charger Included	Enclosure Rating		Each
Red Laser—Disposable Battery



		165	±1/8" @ 33 ft.	1	2	FDA Class II	635 to 650	4 3/8"	2 1/4"	4 1/4"	Magnetic Target, Wall/Ceiling Mount Bracket	No	2	1/4"-20 5/8"-11	Yes	—	IP54	5673N12	0000000


		Green Laser—Rechargeable Battery



				200	±1/8" @ 50 ft.	1	5	FDA Class IIIa	510 to 530	5 1/4"	2 1/2"	5 1/4"	Magnetic Target	No	2	1/4"-20 5/8"-11	Yes	Yes	IP54	5673N11	000000

Tripods

Ht.	For Mounting Hole Thread Size	Material		Each
16" to 51"	1/4"-20	Aluminum	4098T31	000000

Multiple Dot Laser Levels

Project accurate level references onto walls and ceilings to hang light fixtures or install pipe. These lasers have four vials to verify the level, plumb, and square reference points are accurate. Because they’re red, the lasers are best viewed indoors. They have a screw-on mount to secure to a tripod, or you can use the magnetic base to stick them to equipment for quick checks. A V-groove on the body creates stability on curved surfaces, such as pipe or conduit. They’re powered by disposable batteries, so they’re portable and easy to use when you’re not near an outlet.

							Overall			No. of Vials							Mounting Holes		Batteries
	No. of Dots	Max. Laser Distance, ft.	Accuracy	Dot Size @ Distance	Laser Class	Wavelength, nm	Lg.	Wd.	Ht.	Horiz.	Vert.	45°	Cross Check	Includes	Sensitivity	Mount Type	No. of	Thread Size	Included	No. Req.	Type	Size	Container Type		Each
Red Laser



		3	100	±1/8" @ 50 ft.	1/4" @ 50 ft.	FDA Class IIIa	640 to 660	9 1/2"	1"	2 1/4"	1	1	1	1	Laser Mount	0.133"/1 ft., 38 min/0.1"	Screw On, Magnetic Base	1	1/4"-20	Yes	3	Disposable	AA	Pouch	2032A9	0000000

Single Dot Laser Levels

Verify your installation is level using a single reference point. These green lasers appear up to 10 times brighter than red lasers for visibility from farther away and in brightly lit areas, including outdoors. Five bubble vials confirm level, plumb, and a specific angle. One vial is a pitch gauge, which shows slope in _1/8" increments to help check drainage. For quick and easy mounting, these levels have a magnetic base. It's strong enough to hold even on vibrating equipment.

							Overall			No. of Vials								Batteries
	No. of Dots	Max. Laser Distance, ft.	Accuracy	Dot Size @ Distance	Laser Class	Wavelength, nm	Lg.	Wd.	Ht.	Horiz.	Vert.	30°	45°	Sensitivity	Mount Type	Pitch Increments per ft.	Magnet Material	Included	No. Req.	Type	Size	Enclosure Rating		Each
Green Laser



		1	200	±1/8" @ 100 ft.	3/16" @ 50 ft.	FDA Class II	510 to 530	8"	3/4"	2 1/4"	2	1	1	1	0.125"/1 ft., 36 min/0.1"	Magnetic Base	1/8"	Neodymium	No	2	Disposable	AA	IP54	7075N11	0000000

360° Sweeping-Line Automatic Leveling Laser Levels

Magnetic Target

Set these lasers on any surface and they’ll level themselves horizontally within about 4°. They emit a beam of light 360° around the base, so you won’t have to keep repositioning them as you move around a space. Use them to align machinery, install conveyors, and check if walls are plumb. Visual and audible alarms alert you when the laser is beyond its leveling range. Adjust their vertical position manually. Mount these lasers to a tripod (not included) to level at a greater range of heights.

Green Laser—Green lasers are four times brighter than red lasers, so you can see the beam outdoors and in bright lighting. They’re also easier to spot from far away. These lasers include a magnetic target, which you can mount at the height you need to reflect the beam, making it brighter and easier to see from a distance.

				Size					Overall						Mounting Holes		Batteries
	No. of Dots	Max. Laser Distance, ft.	Accuracy	Dot @ Distance	Line @ Distance	Laser Class	Wavelength, nm	No. of Rotational Speeds	Lg.	Wd.	Ht.	Includes	Mount Type	Mounting Fasteners Included	No. of	Thread Size	Included	No. Req.		Each
Green Laser



		1	400	±3/16" @ 100 ft.	1/2" @ 50 ft.	3/8" @ 100 ft.	FDA Class IIIa	510 to 530	4	7 1/8"	6 3/8"	8"	Magnetic Target, Remote Control, Wall/Ceiling Mount Bracket	Screw On	No	2	5/8"-11	Yes	1	19985A11	000000000

Alignment Lasers

Electric—Crosshair Line

Project a bright, vivid reference point to hang light fixtures, align workbenches, or even guide your machine vision camera. These lasers are small enough to fit on virtually any machine.

Electric—Crosshair Line


	Magnet Mount

Crosshair line lasers project a central reference point, as well as vertical and horizontal lines, so you don't have to reposition the laser when aligning in multiple directions. They are commonly used to position shafts, bearings, and couplings.

Red Laser—Red lasers are best viewed indoors and at short distances.

Green Laser—Green lasers are ten times brighter than red lasers. They’re easy to view, even in brightly lit rooms, outdoor locations, and over long distances.

DC—DC lasers can be hardwired to programmable logic controllers (PLCs) and timer relays, so you can automate when they turn on and off.

Barrel Connection— For lasers with a barrel connector, you must cut off the connector to hardwire them.

						Overall
	Max. Laser Distance, ft.	Accuracy	Line Size @ Distance	Laser Class	Wavelength, nm	Lg.	Dia.	Lens Material	Temp., ° F	Connection Type	Cord Lg., ft.	Includes		Each
Red Laser—4.5V DC



		50	Not Rated	4 1/4 ft. @ 10 ft.	FDA Class II	635	4"	3/4"	Glass	15 to 120	2.1 mm ID Barrel	3	AC Adapter	7180N13	0000000


		Green Laser—4.5V DC



				50	Not Rated	4 1/4 ft. @ 10 ft.	FDA Class II	523	4"	3/4"	Glass	15 to 120	2.1 mm ID Barrel	3	AC Adapter	7180N14	000000

Laser Mounts

Magnet Mount—Magnet mounts attach to steel surfaces, so you don't have to drill holes in your machinery. They’ll hold the laser at a fixed angle.

	Lg.	Wd.	Ht.	Material	Pivot Angle	Tilt Range of Motion		Each
Magnet Mount



	FDA Class II	1 1/2"	1 1/2"	2 1/2"	Anodized Aluminum	90°	180°	2073A44	000000

Chuck-Mount Alignment Lasers


Battery Powered—Dot	Battery Powered—Crosshair Line

Mount these lasers into a chuck on your milling machine or drill press to precisely indicate the drilling point. They project either a red dot or crosshair and are best viewed indoors.

Battery Powered—Dot

Magnetic Holders—Magnetic holders store lasers when they’re not in use.

	Alignment Lasers														Magnetic Holders
							Overall		Batteries
	For Min. Chuck Cap.	Max. Laser Distance, ft.	Accuracy	Dot Size @ Distance	Laser Class	Wavelength, nm	Lg.	Dia.	Included	No. Required	Mfr. Equiv. No.	Type		Each		Each
Red Laser



		1/4"	1	±0.001" @ 12"	0.002" @ 1" 0.004" @ 12"	FDA Class I	640 to 660	3"	3/4"	Yes	3	LR44	Disposable	2035A7	0000000	2035A12	000000

Battery Powered—Crosshair Line

Cross-hair line lasers project two intersecting lines for aligning workpieces on tables. They’re easier to see than a dot.

Magnetic Holders—Magnetic holders store lasers when they’re not in use.

	Alignment Lasers														Magnetic Holders
							Overall		Batteries
	For Min. Chuck Cap.	Max. Laser Distance, ft.	Accuracy	Line Size @ Distance	Laser Class	Wavelength, nm	Lg.	Dia.	Included	No. Required	Mfr. Equiv. No.	Type		Each		Each
Red Laser



		1/4"	1	±0.001" @ 12"	0.002" @ 1" 0.002" @ 12"	FDA Class I	640 to 660	3"	3/4"	Yes	3	LR44	Disposable	2035A11	0000000	2035A12	000000

Table-Mount Alignment Lasers

Battery Powered—Dot

Electric—Dot

Position these lasers directly on a flat surface. Lasers project a red dot that is best viewed indoors. Twist the knob to focus the dot so it is more precise at short distances.

Battery Powered—Dot


	Magnet/Fastener Mount

						Overall				Mounting Holes		Batteries
	Max. Laser Distance, ft.	Accuracy	Dot Size @ Distance	Laser Class	Wavelength, nm	Lg.	Wd.	Ht.	Mounting Fasteners Included	No. of	Dia.	Included	No. Required	Chemistry	Size		Each
Red Laser



		300	±1/8" @ 170 ft.	1/16" @ 2 ft. 3" @ 300 ft.	FDA Class IIIa	650	4"	1 1/2"	1"	No	4	0.201"	No	1	Lithium	123	20005A41	0000000

Accessories for Alignment Lasers

	For Laser Class	Ht.	Dia.	Material	Pivot Angle	Tilt Range of Motion
Magnet/Fastener Mount


FDA Class IIIa	4 3/4"	3"	Plastic-Coated ABS/Plastic-Coated Stainless Steel	360°	180°	20005A54	0000000

Laser Converters


90° Beam Splitters	Dot-to-Crosshair Converters	Dot-to-Dotted Line Converters	Dot-to-Line Converters

Component	Line Size @ Distance	Dotted Line Size @ Distance	Crosshair Size @ Distance		Each
90° Beam Splitter	—	—	—	20005A115	0000000
Dot-to-Crosshair Converter	—	—	2 1/4" @ 1 ft.	20005A33	000000
Dot-to-Dotted Line Converter	—	2" @ 1 ft.	—	20005A112	000000
Dot-to-Line Converter	6" @ 1 ft.	—	—	20005A116	00000
Dot-to-Line Converter	8" @ 1 ft.	—	—	20005A113	00000
Dot-to-Line Converter	12" @ 1 ft.	—	—	20005A32	000000
Dot-to-Line Converter	16" @ 1 ft.	—	—	20005A114	00000
Dot-to-Line Converter	28" @ 1 ft.	—	—	20005A111	00000

	Battery Size	Battery Chemistry	Voltage, V DC	Battery Cap., mA·h	Pkg. Qty.
Disposable Battery


123	Lithium	3	1,500	1	7821K63	00000

Electric—Dot


	Magnet/Fastener Mount

						Overall			Electrical				Mounting Holes
	Max. Laser Distance, ft.	Accuracy	Dot Size @ Distance	Laser Class	Wavelength, nm	Lg.	Wd.	Ht.	Connection	No. of Blades	Cord Lg., ft.	Mounting Fasteners Included	No. of	Dia.		Each
Red Laser—120V AC



		300	±1/8" @ 170 ft.	1/16" @ 2 ft. 3" @ 300 ft.	FDA Class IIIa	650	4"	1 1/2"	1"	Straight Blade	2	6	No	4	0.201"	20005A43	0000000

Accessories for Alignment Lasers

	For Laser Class	Ht.	Dia.	Material	Pivot Angle	Tilt Range of Motion
Magnet/Fastener Mount


FDA Class IIIa	4 3/4"	3"	Plastic-Coated ABS/Plastic-Coated Stainless Steel	360°	180°	20005A54	0000000

Laser Converters


90° Beam Splitters	Dot-to-Crosshair Converters	Dot-to-Dotted Line Converters	Dot-to-Line Converters

Component	Line Size @ Distance	Dotted Line Size @ Distance	Crosshair Size @ Distance		Each
90° Beam Splitter	—	—	—	20005A115	0000000
Dot-to-Crosshair Converter	—	—	2 1/4" @ 1 ft.	20005A33	000000
Dot-to-Dotted Line Converter	—	2" @ 1 ft.	—	20005A112	000000
Dot-to-Line Converter	6" @ 1 ft.	—	—	20005A116	00000
Dot-to-Line Converter	8" @ 1 ft.	—	—	20005A113	00000
Dot-to-Line Converter	12" @ 1 ft.	—	—	20005A32	000000
Dot-to-Line Converter	16" @ 1 ft.	—	—	20005A114	00000
Dot-to-Line Converter	28" @ 1 ft.	—	—	20005A111	00000