What is the concept of chain dimensioning?

Chain dimensioning is a method in technical drawing where each dimension is established sequentially, point-to-point, starting from a common reference point or feature. This technique links dimensions together, creating a "chain" where each measure is derived from the previous one, ultimately defining the overall size and layout of an object.

Using chain dimensioning is beneficial in certain scenarios, particularly when you want to ensure that the parts fit together in assemblies or when specific relationships between dimensions are critical. Because the dimensions are interconnected, any adjustments to one feature may have a cascading effect on subsequent features, which is something that designers must manage.

The other options, while relevant to dimensioning, do not accurately depict the essence of chain dimensioning. For example, placing all dimensions from a single reference point describes a different technique known as baseline dimensioning, which isolates each dimension from a common origin. Similarly, circular dimensioning pertains to the method of dimensioning arcs and circles specifically, while organizing dimensions in groups refers to the practice of clustering related measurements together for clarity, which also does not align with the concept of chain dimensioning.