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2. Rotary dial - Wikipedia

   en.wikipedia.org/wiki/Rotary_dial

   A 1931 Ericsson rotary dial telephone without lettering on the finger wheel, typical of European telephones. The 0 precedes 1. A rotary dial typically features a circular construction. The shaft that actuates the mechanical switching mechanism is driven by the finger wheel, a disk that has ten finger holes aligned close to the circumference.

3. Telephone keypad - Wikipedia

   en.wikipedia.org/wiki/Telephone_keypad

   Telephone with letters on its rotary dial (1950s, UK) The layout of the digit keys is different from that commonly appearing on calculators and numeric keypads.This layout was chosen after extensive human factors testing at Bell Labs.

4. Trimline telephone - Wikipedia

   en.wikipedia.org/wiki/Trimline_telephone

   A 220 Trimline rotary desk phone, showing the innovative rotary dial with moving fingerstop Early Touch Tone Trimline with round buttons and clear plastic backplate and round non-modular handset cord Redesigned touch-tone desk model Trimline, manufactured on January 9, 1985 The Trimline 2225, one of the last phones made at the Indianapolis Works in 1986 Early foreign made Trimline, December ...

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   www.aol.com/lifestyle/the-best-walmart-black...

   Trending Walmart Black Friday Deals. HP 15.6 inch Windows Laptop, $199 (was $379) Apple AirPods 2nd Gen, $89 (was $129). Shark Navigator Lift-Away XL Upright Vacuum, $97 (was $199). KitchenAid ...

6. 1A2 Key Telephone System - Wikipedia

   en.wikipedia.org/wiki/1A2_Key_Telephone_System

   The most commonly used telephone sets for the 1A2 systems were modifications of the Bell System standard 500-series telephones for rotary dial systems, and the 2500-series Touch-Tone desk sets. For key system operation these sets were equipped with a set of push-buttons ( keys ) and additional internal contact springs to control the additional ...

7. Lineman's handset - Wikipedia

   en.wikipedia.org/wiki/Lineman's_handset

   Originally, lineman's handsets featured a rotary dial, but modern sets use some variant of the standard 12-button DTMF keypad and also employ an amplifier for speaker use. Most handsets are designed to be used with analog "POTS" lines, and have limited or no function with digital circuits. Older telephone linemen also referred to the handset as ...