In no time at all, you will be impressed with the ease and accuracy of the Johnson 40-6001 laser distance measure's capabilities. If you don't think this measuring tool will be as accurate as your tape measure then double check your results against your tape. If you are first time user start out using the product to take estimation measurements. In other words, taking measurements in compromising settings (ie wet surfaces, porous surfaces, moving targets, temperature outside specified range, etc) may result in inaccurate measurements. This instrument is designed to take accurate measurements and will meet your expectations if used properly. Once you get comfortable with how the LDM operates you will naturally begin to trust the results. Likewise, if a surface has a highly reflective surface (or is in direct sunlight) the laser distance measure will not receive the sufficient return signal to determine a distance.Īs with any new technology, start off easy and work your way into more advanced measurements. If this surface has poor reflective properties the return signal will be too weak for the instrument to calculate the distance. There is a lens that receives the reflected beam and determines (by the rate or speed of return) the distance of the surface or object. To explain in simple terms how these tools work: A laser beam is emitted from instrument and once it makes contact with a surface the beam is reflected back to the instrument. This is true of all laser distance measuring products and is not a defective issue. Attempting to measure highly reflective, porous, translucent, water covered or bright sunlight covered surfaces will be difficult. The key to taking successful measurements with any laser distance measure product begins with aiming at a solid target. While a laser distance measure tool is remarkably fast and efficient there are situations which will challenge any make or model. Level vial for achieving the final measurement in the Indirect Measuring modes (90 degree measurement required to calculate height or width).
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