These first couple of weeks in class I have been working on dimensioning; the different techniques and styles. In this unit I not only worked from my prior knowledge of dimensioning but I increased my knowledge, learning news ways of dimensioning. The two styles we worked on in class are Rectangular Coordinate Dimensioning and Tubular Dimensioning. Rectangular Coordinate Dimensioning is a system of dimensioning in which the features locations are located dependent on each other, separately or as a whole, from a datum or series of datums (a datum is a point, line, plane, cylinder, or the like, assumed to be exact for the purpose of computation, from which the location or geometric relationship of a part may be established). This is helpful when dimensioning round holes and other like features. The other style is Tubular Dimensioning, which is a system of dimensioning where the location and size dimensions are organized in a chart rather then on the object, and dimensions are labeled using letters and numbers, and are located based on a zero zero point also labeled on the drawing. The only dimensions applied to the object are the total length, width, and dept. The picture below is a perfect example of this. Tubular dimensioning is useful when dimensioning multiply objects and when there are multiple parts that are the same size but have different locations. In this unit I have learned improved my knowledge of dimensioning through a variety of dimensioning tasks. Not only have I learned a lot but I had fun doing so. I hope to learn just as much, if not more in the upcoming unit.
