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Architectural drawing, Germany, 1902 Architectural drawing, Canada, 1936. The blueprint process is based on a photosensitive ferric compound. The best known is a process using ammonium ferric citrate and potassium ferricyanide. [6] [7] The paper is impregnated with a solution of ammonium ferric citrate and dried. When the paper is illuminated ...
A size chart illustrating the ANSI sizes. In 1992, the American National Standards Institute adopted ANSI/ASME Y14.1 Decimal Inch Drawing Sheet Size and Format, [1] which defined a regular series of paper sizes based upon the de facto standard 8 + 1 ⁄ 2 in × 11 in "letter" size to which it assigned the designation "ANSI A".
After sufficient light exposure, the glass and original drawing are removed and the blueprint paper is washed to reveal a negative image. This same process, using an intermediary reprographic drawing, could also be used to produce a positive blueprint—blue lines on a white ground—however, this more expensive and time-intensive method was ...
The issuance of a drawing from the engineering/design activity to the production activity. In other words, the event when a draft becomes a completed, official document. A stamp on the drawing saying "ISSUED" documents that RTP has occurred. RTV: room-temperature vulcanizing; return to vendor: 1. RTV sealants, a way to seal joints. 2.
A roll of yellow tracing paper. Simulation of tracing paper transformation levels Samples of tracing paper Tracing paper roll. Tracing paper is paper made to have low opacity, allowing light to pass through. Its origins date back to at least the 1300s, when it was used by artists of the Italian Renaissance. [1]
Architectural drawing, Canada, 1936. This is a simple process for the reproduction of any light transmitting document. Engineers and architects used to draw their designs on cartridge paper; these were then traced by hand on to tracing paper using Indian ink, which were kept to be reproduced with the cyano-copier whenever they were needed.
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