Aikace-aikace kewayon jakar inji:

Daban-daban kayan abinci, sinadarai lantarki, kayan karatu, roba, kayan aiki, dunguwa, abin sha, kayan wasa da sauransu marufi.

Babban fasali:

1, aiki tare da fitar da akwatin tsari;

2, a cikin akwatin hanyar za a iya raba zuwa rufe saman, rufe kasa da sauran ayyuka da yawa, ba zai shafi waje dalilai kamar ruwa ko sake amfani da akwatin aiki da aiki, za a iya daidai a cikin akwatin;

3. Za a iya aiki tare da daban-daban kewaye kayan aiki, amfani da daban-daban marufi hanyoyin;

4, aiki mai sauki, sauki daidaitawa.