https://peertube.dngr.us/videos/watch/f352ef51-0b8c-4e21-b89c-145a17c0e249 Join this channel to get access to perks: https://www.youtube.com/channel/UCddem5RlB3bQe99wyY49g0g/join Help us preserve, scan and post more rare and endangered films! Join us on Patreon. Visit https://www.patreon.com/PeriscopeFilm Visit our website www.PeriscopeFilm.com Dating to 1953, this film "Pictorial Sketching" was part of a series produced, and correlated with, the book "Engineering Drawing" by Thomas French and Charles Vierck. The film emphasizes the importance of engineers learning to sketch pictorially, as it allows ideas to be recorded visually and used as a basis for orthographic drawings. Pictorial sketches, done freehand, require a good sense of proportion and can clarify orthographic views. The three methods of pictorial sketching are axonometric, oblique, and perspective. Axonometric sketching, particularly the isometric position, helps reduce distortion and is suitable for rectangular objects. Techniques for foreshortening and converging lines are discussed, along with drawing ellipses for circles. Oblique sketching is useful for objects with irregular features, preserving true shapes. Perspective sketching provides a better effect but requires knowledge of perspective principles. The film outlines a procedure for sketching, including visualizing the object, selecting the best point of view, drawing axes, blocking in outlines, and completing details while checking for errors and removing unnecessary construction lines. 0 0:00-0:30: Introduction to the importance of engineers learning to sketch pictorially. 0:30-0:54: Explanation of how pictorial sketches can be used instead of or to clarify orthographic drawings. 0:54-1:16: Pictorial sketching is done freehand and requires a good sense of proportion, using similar techniques as orthographic freehand drawing. 1:16-1:29: The three methods of pictorial sketching: axonometric, oblique, and perspective. 1:29-1:56: Axonometric sketching, with a focus on the isometric position and reducing distortion. 1:56-2:21: Techniques for foreshortening and converging lines in axonometric sketching. 2:21-2:32: Axonometric sketching is best for rectangular objects or those with non-parallel circular features. 2:32-3:11: Establishing the direction of horizontal axes for cylindrical objects and completing the axonometric sketch. 3:11-3:30: Drawing ellipses for circles on pictorial drawings and using pictorial squares to aid in sketching curves. 3:30-3:54: Oblique sketching for objects with irregular or circular features in parallel planes. 3:54-4:17: Advantages of oblique projection and reducing distortion through foreshortening and converging lines. 4:17-4:31: Fake perspective in axonometric or oblique sketching. 4:31-4:56: Perspective sketching gives a better effect and requires knowledge of perspective drawing principles. 4:56-5:14: Techniques for testing the direction and length of lines using a pencil. 5:14-5:42: Procedure for sketching: visualize the shape and proportions, select the best point of view, and start the sketch. 5:42-6:00: Importance of choosing the right point of view to avoid distortion and hidden features. 6:00-6:19: Drawing the axes and blocking in the main outlines. 6:19-6:47: Sketching center lines for holes, pictorial squares for ellipses, and preserving proportions and relationships. 6:47-7:06: Completing the details, sketching lines to the desired weight, and avoiding hidden details unless necessary. 7:06-7:15: Checking for errors and removing any objectionable or confusing construction lines. Motion picture films don't last forever; many have already been lost or destroyed. For almost two decades, we've worked to collect, scan and preserve the world as it was captured on 35mm, 16mm and 8mm movies -- including home movies, industrial films, and other non-fiction. If you have endangered films you'd like to have scanned, or wish to donate celluloid to Periscope Film so that we can share them with the world, we'd love to hear from you. Contact us via the weblink below. This film is part of the Periscope Film LLC archive, one of the largest historic military, transportation, and aviation stock footage collections in the USA. Entirely film backed, this material is available for licensing in 24p HD, 2k and 4k. For more information visit http://www.PeriscopeFilm.com Source: https://www.youtube.com/watch?v=7ho8ZG6_J0w Mirrored from Periscope Film (https://www.youtube.com/@PeriscopeFilm) Sat, 13 Jun 2026 13:20:06 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://peertube.dngr.us https://peertube.dngr.us/lazy-static/avatars/41a6fee9-7f57-42d0-a5fc-5db4f1af2e31.png https://peertube.dngr.us/videos/watch/f352ef51-0b8c-4e21-b89c-145a17c0e249 All rights reserved, unless otherwise specified in the terms specified at https://peertube.dngr.us/about and potential licenses granted by each content's rightholder.