Precision mechanics manufacture precision metal components for machines and assemble them into functional units. They also build electronic measuring and control components. Precision mechanics use milling, drilling, grinding and honing machines.

Tasks

Tasks include -
(a) Reading and interpreting engineering drawings and specifications of tools, dies, prototypes or models;
(b) Preparing templates and sketches, and determining work processes;
(c) Visualizing and computing dimensions, sizes, shapes and tolerances of assemblies, based on specifications;
(d) Positioning, securing and measuring metal stock or castings to lay out for machining;
(e) Setting up, operating and maintaining conventional and computer numerically controlled machine tools to cut, turn, mill, plane, drill, bore, grind or otherwise shape work pieces to prescribed dimensions and finish;
(f) Fitting and assembling parts to make and repair jigs, fixtures and gauges;
(g) Repairing and modifying sports guns and other small arms;
(h) Making, fitting, assembling, repairing and installing lock parts and locks;
(i) Making and repairing metal patterns for preparation of foundry moulds;
(j) Laying out lines and reference points on metal stock to guide other workers who cut, turn, mill, grind or otherwise shape metal;
(k) Verifying dimensions, alignments and clearances of finished parts for conformity with specifications, using precision measuring instruments and testing completed items for proper operation.