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2. Track renewal train - Wikipedia

   en.wikipedia.org/wiki/Track_renewal_train

   The new rails usually need to be prepared prior to the arrival of track renewal train. Rails are delivered to the center of the track. Those rail pieces are welded by track workers to form continuous welded rail (CWR) and left at the center of the track at the exact position required by the track renewal train to pick up at its arrival. [2]

3. Filing cabinet - Wikipedia

   en.wikipedia.org/wiki/Filing_cabinet

   The four-drawer vertical file, letter width, is the version purchased by most businesses. The two-drawer file is sold mostly for use alongside a desk. The five-drawer file is mostly purchased by Federal, State, and Local governments (in a 28-inch-deep or 710 mm version), as it typically provides the lowest cost per filing inch.

4. Third rail - Wikipedia

   en.wikipedia.org/wiki/Third_rail

   The third rail is separated into 10 m (32 ft 9 + 3 ⁄ 4 in) long conducting and 3 m (9 ft 10 + 1 ⁄ 8 in) long isolation segments. Each conducting segment is attached to an electronic circuit which will make the segment live once it lies fully beneath the tram (activated by a coded signal sent by the train) and switch it off before it becomes ...

5. Railroad switch - Wikipedia

   en.wikipedia.org/wiki/Railroad_switch

   A right-hand railroad switch with point indicator pointing to right Animated diagram of a right-hand railroad switch. Rail track A divides into two: track B (the straight track) and track C (the diverging track); note that the green line represents direction of travel only, the black lines represent fixed portions of track, and the red lines depict the moving components.

6. Dovetail rail - Wikipedia

   en.wikipedia.org/wiki/Dovetail_rail

   The SIG Sauer 200 STR has an 11 mm dovetail on the receiver for mounting a diopter rear sight or a scope sight, either directly or via a Picatinny rail adapter.. Dovetails come in several different types and sizes depending on manufacturer, but the most common are the 11 mm and 3 ⁄ 8 inch (9.5 mm).

7. Picatinny rail - Wikipedia

   en.wikipedia.org/wiki/Picatinny_rail

   The only significant difference between the MIL-STD-1913 rail and the similar Weaver rail mount are the size and shapes of the slots. Whereas the earlier Weaver rail is modified from a low, wide dovetail rail and has rounded slots, the 1913 rail has a more pronounced angular section and square-bottomed slots. This means that an accessory ...