The only way these workers knew they were making the right part was to constantly check and confirm part numbers. A casual glance at a blueprint might not pick up the difference either. These workers were responsible for producing and testing many parts that were virtually identical except for tiny details not easily detected visually. One class at an aerospace company was adamant about their choice for most important title block item, and by the end of the course convinced me that there was a “most important part B” answer to the question. Most people generally agree with this, but I have engaged in lively debates at several companies. If you’re making a part using an old revision number, you’re making scrap, and all of the other information in the title block is meaningless. ![]() In more than four years teaching the blueprint course, I have always argued for the revision number as the most important single piece of information. ![]() In surveying the class, it’s common to have five or six items identified as most important, often including “approved by,” “material,” “revision number,” “part number,” and “general tolerances.” These items are easy to eliminate, but what about the others? Aside from indicating whether the print has been enlarged or reduced, this information has no use in day-to-day production routines. The same can be said for sheet size, the letter that references the standard size sheet on which the drawing has been printed. Scale, while very useful to cartographers, navigators, architects, and builders, is just a little-used reference in precision manufacturing. Many items in a typical blueprint title block are only of limited utility. As students look at the following list of blueprint title block items, we ask them to consider: “What is the most important piece of information in the title block?” When we teach the basic blueprint workshop at Goodwin University, one of the topics that inspire some interesting discussion is the title block. It’s obvious that good blueprint reading skills are essential to your individual success and the success of your company. They help clients communicate their needs via specifications, and they help you and your company determine the most efficient ways to deliver those specs. The lines, symbols, notes, and tolerances are your map to meeting the clients’ specifications. Common scales in the US include 1/4"=1' and 3/32"=1'.What Is the Most Important Information in a Blueprint Title Block? The Debate Rages…īy Kyle Zachary, MSOL, Continuing Education Instructor, Goodwin Universityīlueprints, technical drawings, engineering drawings… whatever you call them, they are packed with critical information and are the most clear, concise expression of your clients’ needs. There are a variety of scales that might appear on blueprints. ![]() They use whole-integer ratios like 1" = 10' (one inch equals 10 feet) or 1" = 50' (one inch equals fifty feet). ![]() Engineer scales, or civil scales, are used for public water systems, roads and highways, as well as topographical endeavors.Many are presented in fractions: 1/4" = 1' (one-fourth inch equals one foot), 1/8" = 1' (one-eighth inch equals 1 foot). Architectural scales are used for the construction of building exterior and interiors for establishing doors, windows, and walls.For example 1/8" = 1' (one eighth inch equals one foot). The scale sets a rule for the entire drawing, saying what measurements on the drawing are equal to in real life. To ensure proper construction, always use precise measurements. Blueprints are scaled down representations of things like houses, underground piping, and power line.
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