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2. Photochemical machining - Wikipedia

   en.wikipedia.org/wiki/Photochemical_machining

   Photochemical machining (PCM), also known as photochemical milling or photo etching, is a chemical milling process used to fabricate sheet metal components using a photoresist and etchants to corrosively machine away selected areas. This process emerged in the 1960s as an offshoot of the printed circuit board industry. Photo etching can produce ...

3. File:Restroom symbols.svg - Wikipedia

   en.wikipedia.org/wiki/File:Restroom_symbols.svg

   This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.

4. Chemical milling - Wikipedia

   en.wikipedia.org/wiki/Chemical_milling

   Chemical milling or industrial etching is the subtractive manufacturing process of using baths of temperature-regulated etching chemicals to remove material to create an object with the desired shape. [1] [2] Other names for chemical etching include photo etching, chemical etching, photo chemical etching and photochemical machining. It is ...

5. File:Toilets unisex.svg - Wikipedia

   en.wikipedia.org/wiki/File:Toilets_unisex.svg

   Unisex toilets sign. This image is from a collection commissioned by the United States Department of Transportation and designed by AIGA. Date: 2007: Source: It is copyright-free, and is available here. Converted from EPS to SVG. Author: AIGA: Other versions: Raster version: Aiga toilets.png Derivative works of this file: Family 3.svg ...

6. DOT pictograms - Wikipedia

   en.wikipedia.org/wiki/DOT_pictograms

   The results of this research, as well as guidelines on how to best implement the symbols was presented in a report titled Symbol Signs – The development of Passenger/Pedestrian Oriented Symbols for Use in Transportation-Related Facilities in November 1974. [2] In 1979, 16 symbols were added, bringing the total count to 50. [3]

7. File:All Gender Restroom Signs.svg - Wikipedia

   en.wikipedia.org/wiki/File:All_Gender_Restroom...

   English: A pair of US-style bathroom signs featuring a simple image of a toilet instead of traditional gendered iconography. ADA compliant with Grade-2 compacted braille. ADA compliant with Grade-2 compacted braille.