Of course we must realize that each job has its own hazards, to a greater or lesser degree. Wear gloves only when there is exposure to hazards that could produce cuts or scrapes or to chemical hazards that could produce injuries or skin diseases. Never use hands to stop rotating parts. Never use fingers to align holes in parts, like castings. Don't wear rings on the job.
Any jewelry can be dangerous.
Use fuse removers to pull fuses, not your fingers. When lifting, check objects for protrusions, nails, splinters, screws, metal banding, or other sharp or pointed objects. Never use your fingers to test the temperatures of gases, liquids, or solids. Damage can happen before your reflexes remove your fingers. Handle very sharp or pointed tools, like hatchets, chisels, punches, awls, knives and machine blades with extreme care.