Laser Level Safety and Classifications

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    green laser level with construction worker

    One of the major concerns with lasers, in general, is that of safety.  We’ve all heard the horror stories of eyes being burnt out and people going blind.  And they’re true. Lasers are dangerous.  But how about the laser coming out of your laser tools, like levels?

    Are Laser Levels Dangerous?

    Despite the laser only has a small amount of power in laser levels, it is potent and concentrated enough to harm your eyes.

    Laser Safety Glasses do help!

    Anyone Handling a Laser Should Take These Precautions

    • At NO TIME should you stare into the laser beam.  Never.
    • If you’re using tinted glasses to increase your ability to see the laser, remember they DO NOT offer protection from direct exposure.
    • Do not disassemble or try to repair the tool yourself.
    • Read all instruction manuals and safety manuals.
    • Never point a laser at a driver or in any direction that could encounter people and pets.
    • Do not let children play or handle lasers.
    • Purchase and use a laser tool with your needed level of strength. (See Laser Level Classifications Table below)
    • Always turn your laser tool off when not in use.
    • Remove batteries before storing for more than 3 months.
    • Use only original replacement parts from the maker or an authorized, certified dealer. (This also avoids negation of warranty and coverage.)

    Laser Level Classifications Comparison Table

    Laser Level Classification

    Classification
    Power Level
    Precautions
    Danger
    Class IUnder 0.4 milliwats (mw)No skin or tissue damage. Example: scanner at retail store.Very Little
    Class IIBelow 0.1 mwVisible to human eye. Eye blinks when exposed offering most needed protection.Example: Laser Pointer.
    Sustained exposure could results in eye damage.
    Class IIASame power but exposure should not be greater than 3 minutes over 8 hours.Exposure should be under 3 minutes over an 8 hour period.Example: Bar Code scanner.

    Eye injury and damage if precautions not followed.
    Class IIIMost quality lasers are this class.Most quality lasers fall in here.See Class IIIA and IIIB
    Class IIIA Immediate laser power of 1 to 5 mwIntermediate power between 1 and 5 mwSpecific controls and precautions needed. See manufacturer safety manual.
    Class IIIB Moderate power cap from 5 to 500 mwModerate power of between 5 and 500mw.Specific controls and precautions needed. See manufacturer safety manual.
    Class IVHighest power. Greater than 500mw.Highest powered at over 500mw.Hazardous to view under any conditions.

    Can Laser Levels Damage Your Eyes?

    As you can from the chart above:

    Class I and I, for the most part, won’t damage your eyes.

    Class IIA, however, will cause damage after sustained exposure for a long time.

    Class III lasers get up to 5mw and they ARE dangerous and required precise safety measures and precautions.  Class IIIB is HIGHLY dangerous to eyes and tissue.

    Class IV is the most powerful and harmful laser.  It will damage yes and burn skin.

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    Howze it? I'm Raf. Been living and working construction in Hawaii for about 10 years. Just recently started doing some handy man work around my neighborhood and then got the itch to review equipment that makes my life easier and hopefully yours too.

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