Geodetic Engineering: Direct Contact Positives
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Questions and Answers

What is a characteristic of direct contact positives?

  • The drawing is placed face-up on a printing paper sensitized with diazo compounds and exposed to sunlight. (correct)
  • A weak solution of caustic soda is used for alterations on blueprint.
  • It is possible to enlarge or reduce when making direct contact diazo prints.
  • The process involves laying the map manuscript next to iron sensitized paper.

    • What is a drawback of direct contact negatives?

  • The map manuscript is exposed to water after being laid next to iron sensitized paper.
  • The exposed sheet may undergo distortion during development. (correct)
  • Alterations on blueprints are made using a strong solution of caustic soda.
  • The process does not involve any exposure to light.

    • What is the main purpose of a mimeographing machine?

  • To enlarge or reduce drawings for printing.
  • To produce white lines using a weak solution of caustic soda.
  • To obtain inexpensive copies of prepared map manuscripts. (correct)
  • To create maps through exposure to sunlight.

    • What is involved in stencil cutting according to the text?

    <p>Using a strong solution of caustic soda for alterations on blueprints.</p> Signup and view all the answers

    What role does the Diazo machine play in map production?

    <p>To obtain relatively few inexpensive copies of map manuscripts.</p> Signup and view all the answers

    What distinguishes the photocopy process mentioned in the text?

    <p>Creating inexpensive copies of prepared map manuscripts.</p> Signup and view all the answers

    What is a drawback of micrographics mentioned in the text?

    <p>Inability to reproduce solid black areas</p> Signup and view all the answers

    Which duplication system was developed by Xerox Corporation of America?

    <p>Xerography</p> Signup and view all the answers

    What is the main benefit of micrographics mentioned in the text?

    <p>Reduced space needed for map storage</p> Signup and view all the answers

    Which type of machine is used for stencil cutting?

    <p>Mimeographing machine</p> Signup and view all the answers

    What is a characteristic of a Diazo machine?

    <p>Uses microfilm and aperture cards</p> Signup and view all the answers

    Which system provides protection to original map manuscripts from wear and tear?

    <p>Micrographics</p> Signup and view all the answers

    What is the main difference between the photocopy process and the film photograph process discussed?

    <p>Photocopy process involves printing on sensitized paper without an intermediate film step, while film photograph process uses photographic film directly.</p> Signup and view all the answers

    Which process involves utilizing a copy camera for cartography purposes?

    <p>Xerography</p> Signup and view all the answers

    In the context of map design, which process yields prints in negative form on sensitized paper?

    <p>Photocopy process</p> Signup and view all the answers

    Which method involves making exposures of original maps or drawings on photographic film using a camera?

    <p>Film photograph process</p> Signup and view all the answers

    What distinguishes Xerography from other processes mentioned?

    <p>It can make precise enlargements and reductions with a copy camera.</p> Signup and view all the answers

    Which process is known for producing quality copies at desired sizes on dimensionally stable materials?

    <p>Film photograph process</p> Signup and view all the answers

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