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The concept of a laser level has been around since at least the early 1970s, [2] the original spinning-mirror design laser plane and line level was patented by the late 1980s, [3] and the compact lens-based laser line level (as produced by many tool manufacturers today) was patented in the late 1990s. It was invented by Oscar Soliz in the late ...
A laser line level is a tool combining a spirit level and/or plumb bob with a laser to display an accurately horizontal or vertical illuminated line on a surface the laser line level is laid against. Laser line levels are used wherever accurate verticals and horizontals are required, typically in the construction and cabinetry industries. Some ...
DeWalt Ford Fusion in 2008, driven by Matt Kenseth.. DeWalt Tools sponsored NASCAR driver Matt Kenseth from 1999 through to the season of 2009. In this time period, Kenseth won 18 races, the 2000 Sprint Cup Rookie of the Year Award, 2003 Winston Cup Series Championship, 2004 NEXTEL Cup All Star Race and the 2009 Daytona 500.
A laser warning symbol. Laser radiation safety is the safe design, use and implementation of lasers to minimize the risk of laser accidents, especially those involving eye injuries. Since even relatively small amounts of laser light can lead to permanent eye injuries, the sale and usage of lasers is typically subject to government regulations.
The scale numbers range from LB1 to LB10, where the number is a lower limit for the optical density, i.e. LBn means that OD > n, or <, where T is the transmittance. The minimum scale number for a given laser with a beam diameter of 1 mm depends on the working mode and the wavelength as follows (EN 207:2017):
A series of scientific studies in modern times suggested that the men of the expedition did not all die quickly. Hypothermia , starvation , lead poisoning [ 4 ] or zinc deficiency [ 5 ] and diseases including scurvy , along with general exposure to a hostile environment while lacking adequate clothing and nutrition, killed everyone on the ...
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