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  2. Engineering drawing abbreviations and symbols - Wikipedia

    en.wikipedia.org/wiki/Engineering_drawing...

    A general note applies generally and is not called out with flags. 2. Find number: "FN" meaning "find number" refers to the ordinal number that gives an ID tag to one of the constituents in a parts list (list of materials, bill of materials). Thus "fasten using FN7" refers to a fastener that is "find number" 7 in the list. FoS: feature of size

  3. LTR - Wikipedia

    en.wikipedia.org/wiki/LTR

    LTR or similar may refer to: Measurement. Ltr. (for 'litre' or 'liter'), a unit of volume; Letter (paper size) Science and technology.

  4. LTR Standard - Wikipedia

    en.wikipedia.org/wiki/LTR_Standard

    LTR Standard Talkgroups are written in the format A-HH-GGG. "A" is the area code and is either 0 or 1. The area code is the same for all Talkgroups in a given system site and is arbitrarily chosen by the system operator; the most common use is to simply distinguish between Talkgroups on multiple systems with geographical overlap.

  5. Tire code - Wikipedia

    en.wikipedia.org/wiki/Tire_code

    To take a common example, 195/55R16 would mean that the nominal width of the tire is approximately 195 mm at the widest point, the height of the side-wall of the tire is 55% of the width (107 mm in this example) and that the tire fits 16-inch-diameter (410 mm) rims. The code gives a direct calculation of the theoretical diameter of the tire.

  6. Light rail - Wikipedia

    en.wikipedia.org/wiki/Light_rail

    Combining highway expansion with LRT construction can save costs by doing both highway improvements and rail construction at the same time. As an example, Denver's Transportation Expansion Project rebuilt interstate highways 25 and 225 and added a light rail expansion for a total cost of $1.67 billion over five years. [65]

  7. Liter of Light - Wikipedia

    en.wikipedia.org/wiki/Liter_of_Light

    Liter of Light is an open source design for a low-cost light tube (or deck prism or vault light) that refracts solar light to provide daytime interior lighting for dwellings with thin roofs.

  8. Intermediate bulk container - Wikipedia

    en.wikipedia.org/wiki/Intermediate_bulk_container

    The high-density polyethylene used in the construction of rigid, poly caged IBC totes is a durable thermoplastic chosen for its compatibility with many chemicals and materials often employed throughout industries, commercial applications, agriculture as well as consumer-based uses, as caged IBCs are often repurposed for aquaponic gardening.

  9. Drum (container) - Wikipedia

    en.wikipedia.org/wiki/Drum_(container)

    A typical 200-litre (55 US or 44 imp gal) tight head drum Low level nuclear waste in open head steel drums.. A drum (also called a barrel) is a cylindrical shipping container used for shipping bulk cargo.