1.
C.S.STERN. Uma unidade portuguesa ao serviço da Industria portuguesa
Data:
[s.d.]
2.
ESIMAC. Aparelhos de medição eléctricos
Data:
[s.d.]
3.
English Electric. Portable instruments - Model 285 : Ammeters & Voltmeters: D.C Moving Coil
Data:
[s.d.]
4.
English Electric. Portable instruments - Model 185 : A.C Ammeters & Voltmeters: Moving Iron
Data:
[s.d.]
5.
English Electric. Indicating instruments for use with motor control equipment
Data:
[s.d.]
6.
English Electric. Painel instruments types S20, S25 & moving coil square flush pattern
Data:
[s.d.]
7.
English Electric. Combined single-phase kEk meter and terhmal maxium demand ammeter - Type B31B-LC
Data:
[s.d.]
8.
English Electric. Reactive kilo Volt Ampere-hour meters - types A52 and A53
9.
Acem mesure l´énergie électrique
