Mechanical
Mechanical in The Sims
The Mechanical skill allows a Sim to repair broken appliances, electronics, sinks, tubs, toilets, and showers at a faster speed which may eliminate the need of a repairman. The skill also reduces the risk of electrocuting themselves when changinglight bulbs however, a maximum level mechanical skill (10/10) does not eliminate the risk of getting electrocuted. The mechanical skill is also important in the promotion of the sim's career, including (but not limited to), bussiness, military, science, and law enforcement.
To increase your Mechanical skill, have your Sim read mechanical books from the bookshelves. In Livin' Large, a Sim can use the woodworking table and make gnomes to increase their Mechanical skill. The higher their Mechanical skill, the faster they make gnomes and the higher the price each gnomes can be sold for. In Makin' Magic, a similar table, the Kraft-a-Gargoyle table is introduced, which also increases the Mechanical skill.