The Carpenters’ Steel Square and Its Uses by Fred T. Hodgson treats the familiar framing square as a versatile instrument for layout and calculation. This revised and greatly enlarged second edition appeared in New York in 1883. Its subject is the use of the square to obtain lengths, bevels and shapes for carpentry, from rafters and braces to stairs, hoppers and ornamental work.
Understanding the square as a working instrument
The book begins with preliminary, historical and descriptive material before examining the square itself. Hodgson’s concern is that a craft worker should understand the capabilities of the tools in hand. He presents the square as something more than a means of checking a right angle: its scales and the relationships between its two arms can help solve recurring workshop problems.
Board, plank and scantling measure, the brace rule and the octagonal scale receive attention in the first part. These subjects introduce information carried on or associated with the tool. The text then moves toward its application, including the use of a fence. Readers interested in old squares can use these passages to connect markings on an instrument with the tasks for which they were intended.
The illustrations are essential to the explanations. A diagram may show the square resting against a piece, the successive positions used to establish a pattern, or the relationship between a drawn line and a finished cut. The reader is expected to examine the figure alongside the text. The book is therefore best approached with time to follow the drawings rather than as a collection of quick verbal rules.
Rafters, braces and roof geometry
Roof work is a major subject. The contents include laying out rafters, hip rafters, backing for hips, and the bevels and lengths associated with hips, jacks and purlins. Hodgson connects the tool with the geometry of the roof, showing why length and bevel are parts of the same problem. Later sections return to irregular hip roofs and related arrangements.
Brace layout provides another example of the square’s practical range. Drawings show the tool positioned to establish a brace pattern and to relate the pattern to its place between framing members. Such examples help explain the value of repeatable layout. A small departure from accuracy can be carried forward when the tool is moved, so the condition and placement of the square matter.
These pages are useful to readers studying traditional carpentry and the interpretation of historical framing details. They document ways of working before electronic calculators and contemporary layout aids. Their interest lies in making geometric relationships visible through an ordinary hand tool, rather than presenting the resulting dimensions as unexplained numbers.
Stairs, hoppers and other layout problems
The book extends well beyond roof framing. Stairs and strings, diminishing stiles, spring moldings, octagons and other polygons appear in the contents. Separate discussions concern circles, ellipses and a parabola. Examples involving the center or proportions of circles show the square used for geometric construction as well as measuring timber.
Hoppers receive repeated attention because their sloping sides require related cuts and bevels. The later material includes widths, corner pieces and angles for this work. Miscellaneous rules and memoranda round out the volume, along with further roof problems and splayed Gothic heads. The variety makes the book a focused reference on one tool with a surprisingly broad set of applications.
This free ebook is relevant to hand-tool readers, carpentry historians, collectors of measuring instruments and people interested in practical geometry. It is especially rewarding when read as a sequence of problems: identify the shape or joint, study the drawing, then follow how the square is used to establish it.
The scan preserves facing pages together, so its 49 PDF pages are mostly two-page spreads rather than 49 individual printed pages. It has no searchable text layer. Historical construction examples should be assessed against current practice before use in a building; the volume’s enduring appeal is its close account of layout and the reasoning behind it.
Book details
- Author: Fred T. Hodgson
- Publisher: The Industrial Publication Company, New York
- Year: 1883
- Edition: Second edition, revised and greatly enlarged
- Illustrations: Over 70 woodcuts stated on title page
- Digital length: 49 PDF pages, mostly facing-page spreads
- Language: English
- File size: 16.72 MB
