1/100 mm
1/100 cm
1/1000 cm
1/1000 mm
Geiger counter
Radio compass
Radio micrometer
Radar
Concave lens
Convex lens
Plano concave lens
Plano convex lens
Low temperature
High temperature
High Pressure
Low pressure
Red, Blue and Yellow
Blue, Green and Yellow
Green, Red and Yellow
Red, Blue and Green