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2. Window blind - Wikipedia

   en.wikipedia.org/wiki/Roller_blinds

   Various window blind styles. A window blind is a type of window covering. [1] There are many different kinds of window blinds which use a variety of control systems. A typical window blind is made up of several long horizontal or vertical slats of various types of hard material, including wood, plastic or metal which are held together by cords that run through the blind slats.

3. Slate and stylus - Wikipedia

   en.wikipedia.org/wiki/Slate_and_stylus

   3 slates and 2 styli. Top slate is metal for 8.5 by 11 inch paper with four lines. Yellow slate is plastic. Bottom slate is for 3 by 5 inch card stock. Each stylus has a wood handle and a blunted metal point. The slate and stylus are tools used by blind people to write text that they can read without assistance.

4. List of disk drive form factors - Wikipedia

   en.wikipedia.org/wiki/List_of_disk_drive_form...

   8-, 5.25-, 3.5-, 2.5-, 1.8- and 1-inch HDDs, together with a ruler to show the length of platters and read-write heads A newer 2.5-inch (63.5 mm) 6,495 MB HDD compared to an older 5.25-inch full-height 110 MB HDD. IBM's first hard drive, the IBM 350, used a stack of fifty 24-inch platters and was of a size comparable to two large refrigerators.

5. Dust collector - Wikipedia

   en.wikipedia.org/wiki/Dust_collector

   Vane-axial fans - Vane-axial fans are similar to tube-axial fans except air-straightening vanes are installed on the suction or discharge side of the rotor. They are easily adapted to multistaging and can develop static pressures as high as 14 to 16 in. wg (3.483 to 3.98 kPa). They are normally used for clean air only. [citation needed]

6. Contax - Wikipedia

   en.wikipedia.org/wiki/Contax

   Made between 1932 and 1936, the original Contax, known as Contax I after later models were introduced, was markedly different from the corresponding Leica.Using a die-cast alloy body it housed a vertically travelling metal focal-plane shutter reminiscent of the one used in Contessa-Nettel cameras, made out of interlocking blackened brass slats somewhat like a roll-up garage door.

7. Floppy disk - Wikipedia

   en.wikipedia.org/wiki/Floppy_disk

   8-inch floppy disk, inserted in drive, (3½-inch floppy diskette, in front, shown for scale) 3½-inch, high-density floppy diskettes with adhesive labels affixed The first commercial floppy disks, developed in the late 1960s, were 8 inches (203.2 mm) in diameter; [4] [5] they became commercially available in 1971 as a component of IBM products and both drives and disks were then sold ...