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  2. Laser level - Wikipedia

    en.wikipedia.org/wiki/Laser_level

    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 ...

  3. Level (optical instrument) - Wikipedia

    en.wikipedia.org/wiki/Level_(optical_instrument)

    The Y level or wye level is the oldest and bulkiest of the older style optical instruments. A low-powered telescope is placed in a pair of clamp mounts, and the instrument then leveled using a spirit level, which is mounted parallel to the main telescope. The term dumpy level (also builder's level) endures despite the evolution in design. They ...

  4. Theodolite - Wikipedia

    en.wikipedia.org/wiki/Theodolite

    The term transit theodolite, or transit for short, refers to a type of theodolite where the telescope is short enough to rotate in a full circle on its horizontal axis as well as around its vertical axis. It features a vertical circle which is graduated through the full 360 degrees and a telescope that could "flip over" ("transit the scope").

  5. Kapro - Wikipedia

    en.wikipedia.org/wiki/Kapro

    The company was founded in 1974 and renamed Kapro (Kadarim Products) in 1990. Kapro Holdings (owned by Kibbutz Kadarim and its members) is the company's majority shareholder.

  6. Level Up Your DIY Projects With These Editor-Approved Laser ...

    www.aol.com/lifestyle/keep-home-diy-projects...

    Mounting new kitchen cabinets or hanging a few pictures? Keep your stuff level and straight with these tried-and-tested gadgets.

  7. International roughness index - Wikipedia

    en.wikipedia.org/wiki/International_roughness_index

    The latter is much larger than any of the static/slow speed Class 1 profilers or a typical laser profilometer. This can be addressed with a 4-inch or 6-inch line laser mounted in the wheelpaths to mimic the tire patch width. Or a high definition scanning laser can be used which create a 3D model of the pavement surface.