Geodetic Engineering: Direct Contact Positives

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?

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

What role does the Diazo machine play in map production?

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

What distinguishes the photocopy process mentioned in the text?

Creating inexpensive copies of prepared map manuscripts. Signup and view all the answers

What is a drawback of micrographics mentioned in the text?

Inability to reproduce solid black areas Signup and view all the answers

Which duplication system was developed by Xerox Corporation of America?

Xerography Signup and view all the answers

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

Reduced space needed for map storage Signup and view all the answers

Which type of machine is used for stencil cutting?

Mimeographing machine Signup and view all the answers

What is a characteristic of a Diazo machine?

Uses microfilm and aperture cards Signup and view all the answers

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

Micrographics Signup and view all the answers

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

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

Which process involves utilizing a copy camera for cartography purposes?

Xerography Signup and view all the answers

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

Photocopy process Signup and view all the answers

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

Film photograph process Signup and view all the answers

What distinguishes Xerography from other processes mentioned?

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

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