What does TD mean in OCEAN SCIENCE

TD stands for Table Datum. It is defined as the alignment of a table surface to a given horizontal position.

In manufacturing, Table Datum is often used to ensure precision when cutting, drilling, and fabricating. Knowing the exact height of the table datum allows workers to produce more accurate components by aligning cutting tools with specific reference points.

Table Datum is also important for construction projects because it allows architects and engineers to accurately plan out how their structures will look and how they should be built. By using Table Datum as a reference point, they can make sure that walls are leveled and dimensions are precise within the building's design.

Generally speaking, the height of your Table Datum should be determined based on the purpose of your project or product. For example, if you are constructing a building with several stories, then each story's floor height should be aligned with the same relative horizontal position (your table datum) so that all levels line up properly with each other.