Bidhaa
- Darasa la atomiki frequency mita
- Kelele wastani mita, redio, kwa matumizi ya viwanda
- Kupima vyombo, ukolezi ufumbuzi, umeme au elektroniki
- Laser kasi mita
- Mapigo counters na recorders, umeme
- Mnachuja viwango
- Tachometer mafungo
- Tachometers na tachographs, umeme
- Tachometers, umeme
- Vifaa vya kupima, laser na Maser pato
- Vifaa vya kupima, laser pato, macho