L&D — Loss and Damage.

LA — Letter of Authority.

LCL — Less Than Carload.

Labor — For shows, refers to contracted workers who perform services. Also INSTALLERS.

Labor Call — 1. A method of securing union employees. 2. Time specified for labor to report.

Labor Desk — The location in an exhibit hall where exhibitors can order labor.

Labor Form — Form used by exhibitors requesting labor at exhibition.

Laborer — See INSTALLERS.

Lacquer Finish — Coating sprayed on wood, metal and other materials, pigment colored or clear, that is durable and washable. Composition of coating includes primarily a water soluble solution.

Lamination — The bonding under pressure of two or more materials to form a layer or sandwich of materials; i.e., plywood,, plastic laminate

Landscape — Sign where width measurement (horizontal line) is larger than height. Also known as HORIZONTAL.

Lap Joint — Joint in construction achieved by overlapping ends of lumber for greater strength than simple butt joint.

Laser Disc — A medium for holding an image. Can be randomly accessed on a disc player, allowing interactive exhibits. See also DVD.

Lazy Susan — Manually rotated tray on ball bearings. Better known as TURNTABLES.

Leadman — Employee who sets the pace for a group working on the same job or as a team. Also known as LEADS, AND LEADPERSONS.

Lead Retrieval — A system for capturing and follow up of leads generated at an exposition.

Lead Tracking — A system for follow-up of leads generated at an exposition.

Lectern — A reading stand with a slanted top. A lectern that stands on the floor is a PODIUM.

Less than Truckload (LTL) — Rates applicable when the quantity of freight is less than the volume of truckload minimum weight.

Letrasign — Trade name for self-adhesive vinyl letter.

Letter of Credit (L/C) — A document, issued by a bank per instructions by a buyer of goods, authorizing the seller to draw a specified sum of money under specified terms, usually the receipt by the bank of certain documents within a given time.

Liability — Legal definition of the person or persons responsible for damage or injuries.

Licensing — A business arrangement in which the manufacturer of a product (or a firm with proprietary rights over certain technology, trademarks, etc.) grants permission to some other group or individual to manufacture that product (or make use of that proprietary material) in return for specified royalties or other payment.

Lighting Truss — A construction of tubular steel or aluminum alloy onto which lighting instruments are hung and which is in turn suspended above the stage or exhibit.

Light Bar - A bar with a light that hangs behind a header.

Light Box — Enclosure with lighting and translucent face of plastic or glass.

Lighting Plot –– A print showing the location and type of all lights used in a booth.

Linear Display — Linear exhibits are generally 10’ deep. They are offered in 10’ or 15’ widths and can be combined to create an exhibit of almost any length.

Line Art — Term for artwork composed of lines only with no tone.

Line Switch —SEE SWITCH

Literature Rack — Devices used to hold literature or brochures. Also Lit Rack.

Loading Dock — An area on premises where goods are and shipped.

Loadlock — A metal brace to secure partial loads within trailers and railway cars.

Local — Organization of employees in one area or in one company or a group of companies, chartered by and affiliated with a national or international union. SEE UNION.

Lock Up — A secure storage area within an exposition facility.

Logo — A trademark, unique to each particular company.

Loop Fabric — Fabric to which Velcro fastener fabric will adhere.

Loop Projector — Projector modified to run film that has been spliced into continuous loop.

Loose Jig — Removable support in shipping case.

Low Voltage —An electromotive force rated 24 volts nominal or less, supplied from a transformer, converter, or battery.

Lowboy — A type of truck that can be adapted for picking up loads at ground level.

LTL –– See Less than Truckload.

Lucite — Term defining plastic similar to Plexiglas, an acrylic plastic.

Lumiline — Slim, cylindrical, incandescent lamp; used as substitute for fluorescent lamps where dimming is required.