The 2EVQ consists of 2 moving iron systems mounted diagonally in one housing...
The 2EQ consists of 2 mutually independent moving iron systems with a joint scale. Point of rotation of pointer for both systems at lower right corner...
Double reed frequency meter – 2FTQ
The 2FTQ has 2 rows of reeds mounted in one housing. Exchangeable scale...
Double pointer frequency meter – 2FQ
The 2FQ consists of 2 moving coil instruments mounted diagonally in one housing. A compact instrument with accurate and linear read-out...