A Descriptive Treatise on Mathematical Drawing Instruments: Their Construction, Uses, Qualities, Selection, Preservation, and Suggestions for Improvements, with Hints Upon Drawing and Colouring
A Descriptive Treatise on Mathematical Drawing Instruments: Their Construction, Uses, Qualities, Selection, Preservation, and Suggestions for Improvements, with Hints Upon Drawing and Colouring
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1878 Excerpt: ...elaborate and in some respects not very practical subject, it may be well just to mention other plans which have been invented with the good intention of rendering sketching easy, such as--several modifications of the pantagraph, the tracer of which follows the apparent lines upon a sheet of glass; instruments with ...
Read More
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1878 Excerpt: ...elaborate and in some respects not very practical subject, it may be well just to mention other plans which have been invented with the good intention of rendering sketching easy, such as--several modifications of the pantagraph, the tracer of which follows the apparent lines upon a sheet of glass; instruments with wires or threads over frames placed before the observers, either to observe distances or to divide the picture into squares; and a few other schemes, which are generally really of as little practical value as they are in principle antagonistic to true art. SECTION II. Relates to Drawing Instruments used at Guiding Edges, Instruments for Measuring, and Drawing Materials. CHAPTER XX. SURFACES TO DRAW UPON--DRAWING-BOARDS--TRACING FRAMES--PLANE TABLES--SKETCHING-BOABDS AND BLOCKS--ENGRAVER'S TRAT, TRESTLES, ETC. Improved Drawing-board. A Good Drawing-board is a very great desideratum to the draughtsman. The qualities it is important that it should possess are--an equal surface, which should be slightly rounded from the edges to the centre, in order V o.... 145 that tlie drawing-paper when stretched upon it may present a solid surface; and that the edges should be perfectly straight, and at right angles to each other. These qualities seem theoretically easy to obtain in a material so tractable as soft pine-wood, of which drawing-boards are generally made. Practically, this is very difficult, as wood, however well seasoned, is continually changing its form, rapidly absorbing moisture from the atmosphere, causing expansion of the fibre, and slowly contracting unequally as the moisture evaporates, and this with a force no simple means will resist. Tor these reasons, the true principle of making a drawing-board is that which will leave the wood free, so ...
Read Less
Add this copy of A Descriptive Treatise on Mathematical Drawing to cart. $20.57, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
Add this copy of A Descriptive Treatise on Mathematical Drawing to cart. $30.01, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
Add this copy of A Descriptive Treatise on Mathematical Drawing to cart. $32.92, new condition, Sold by Ria Christie Books rated 5.0 out of 5 stars, ships from Uxbridge, MIDDLESEX, UNITED KINGDOM, published 2022 by Legare Street Press.
Add this copy of A Descriptive Treatise on Mathematical Drawing to cart. $42.59, new condition, Sold by Ria Christie Books rated 5.0 out of 5 stars, ships from Uxbridge, MIDDLESEX, UNITED KINGDOM, published 2022 by Legare Street Press.
Add this copy of A Descriptive Treatise On Mathematical Drawing to cart. $54.09, new condition, Sold by Booksplease rated 4.0 out of 5 stars, ships from Southport, MERSEYSIDE, UNITED KINGDOM, published 2008 by Kessinger Publishing.
All Editions of A Descriptive Treatise on Mathematical Drawing Instruments: Their Construction, Uses, Qualities, Selection, Preservation, and Suggestions for Improvements, with Hints Upon Drawing and Colouring
