| A | B |
|---|
| Assembly * The variables by which an object can move. In assemblies | an object floating free in space with no constraints to another object can be moved along three axes of translation and around three axes of rotation. Such a body is said to have six degrees of freedom. |
| Auxiliary View * An orthographic view of an object using a direction of sight other than one of the six basic views (front | top |
| Clearance Fit * The total gap between two mating parts | such as the difference in diameters between a cylindrical shaft and a hole. |
| Counterbore * A cylindrical recess around a hole | usually to receive a bolt head or nut. |
| Countersink *A conical-shaped recess around a hole | often used to receive a tapered screw. |
| Degree of Freedom * The variables by which an object can move. In assemblies | an object floating free in space with no constraints to another object can be moved along three axes of translation and around three axes of rotation. Such a body is said to have six degrees of freedom. |
| Detail Drawing * A dimensioned | working drawing of a single part. Also referred to as part drawing. |
| Documentation * 1. The documents that are required for something | or that give evidence or proof of something. 2. Drawings or printed information that contains instructions for assembling |
| Key * A rectangular or semicircular shape used to prevent parts | such as gears or wheels |
| Scale * 1. A straight-edged strip of rigid material marked at regular intervals and used to measure distances. 2. A proportion between two sets of dimensions used in developing accurate | larger or smaller prototypes |
| Spotface *A shallow recess like a counterbore | used to provide a good bearing surface for a fastener. |
| Title Block * A table located in the bottom right-hand corner of an engineering drawing that identifies | in an organized way |
| lugubrious* mournful | dismal |
