• Circular Bullseye Level is Ideal for Checking the Level of Breadboards
    and Tables in the XY Plane
  • Combination Square Level can be Used to Measure the Level in One
    Dimension and Draw Right Angles


Combination Level


Bullseye Level

LVL01 Shown on an Optical Table (Sold Separately)

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The holes in LVL02 can be used to measure the height of a beam larger than the hole. Part of the beam passes through the hole and hits the screen, showing that the beam is at the height of the hole. The rest of the beam is clipped by the blade of the level, allowing the user to read off the height of the beam. Click the photo to see an enlarged image with a zoom of the beam on the blade.

LVL01 Features

  • 40 arcmin Sensitivity
  • Made of Durable Acrylic and a Hot Stamped Lens
  • Measures Level in XY Plane

The LVL01 Bullseye Level is well suited for determining the level in the XY plane. The level can be used in the lab to measure and set the level of breadboards and tables, as well as optomechanical mounts.

LVL02 Features

  • Precision Machined Head and Bubble Level Ensure Squareness to 0.001°
  • 12" Etched Stainless Steel Blade with 3 Different Inch Graduations: 8, 16, and 32 Marks per Inch
  • Through Holes Provide Easy Marking Access
  • Heavy-Duty Machined Square Head
  • Self-Aligning Drawbolt
  • Hardened Scriber Included in Back of Head

Click to Enlarge

The blade of LVL02 has holes every 1/4" along one edge and every 1/8" along the other edge.

The LVL02 Combination Square is a precision instrument with better sensitivity than similar instruments used in carpentry. Sensitivity is the measure of how large of a tilt is needed for the bubble to move, while accuracy is how close to true level the device measures. The stainless steel blade is marked with two scales on each side and is removable. One side is marked with 1/8" markings with 1/4" hole spacing and 1/16" markings with 1/8" hole spacing. On the other side, the ruler is marked with 1/16" markings with 1/4" hole spacing and 1/32" markings with 1/8" hole spacing. Also included with the combination square is a hardened scriber which is conveniently stored in the back of the head for ready access.

Posted Comments:
user  (posted 2021-01-29 08:25:08.603)
It would be great if a metric version of LVL02 was available! It would only require different gradations and holes on the blade, the body could stay the same.
YLohia  (posted 2021-02-05 04:41:43.0)
Hello, thank you for your feedback. We will consider adding a metric option to our catalog in the future.
ludoangot  (posted 2016-11-15 10:29:14.203)
Hello, is a metric version of the square with the same features (level, holes,...) available?
tfrisch  (posted 2016-11-18 08:49:11.0)
Hello, thank you for contacting Thorlabs. Unfortunately, there is not a metric version available at this time.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
LVL01 Support Documentation
LVL011.25" Circular Bullseye Level
LVL02 Support Documentation
LVL0212" Combination Square with Bubble Level and Scribe