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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 ...
On September 1, 2016, DeWalt debuted its FlexVolt hybrid voltage battery pack that can switch between series battery wiring providing 60 V (54 V nominal) and 2 Ah, or parallel wiring for 20 V (18 V nominal) and 6 Ah, depending on whether it is installed in a 60 V or 20 V tool, determined by communication between the tool and battery. [10 ...
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The term dumpy level (also builder's level) endures despite the evolution in design. They can be manual or automatic, the latter being much quicker to set up. A tilting level is a variant which has a precision vertical adjustment screw which tilts both the telescope and the high accuracy bubble level attached to it to make them level. This ...
Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems that use electricity, electronics, and electromagnetism.
Natural and synthetic graphite are used as an anode material to construct electrodes in major battery technologies. [ 55 ] The demand for batteries, primarily nickel–metal hydride and lithium-ion batteries , caused a growth in demand for graphite in the late 1980s and early 1990s – a growth driven by portable electronics, such as portable ...
This requirement eliminated problems of tarnished reflectors by sealing them together with the bulbs. [17] It also made aiming the headlight beams simpler and eliminated non-standard bulbs and lamps. [17] The Tucker 48 included a defining "cyclops-eye" feature: a third center-mounted headlight connected to the car's steering mechanism. [18]