This Philips GM3155B is a very small but capable oscilloscope. It was used on the civilian marked but also by the Kriegsmarine and especially on U-boats.
Tubes inside it are as follows
2x Valvo 4673
Valvo 4690
2x Philips 1876
Valvo DN7-2
Side view. I have by now replaced the knobs and some other not original parts.
Back view Type plate on top power socket on the bottom. The Voltage on wich it operates can be changed from 110v up to 245V.
Very nice quality on the inside. Be CAREFULL these capacitors you see are Isolated from the ground. If you touch two of them at the same time there is a potential for up to 800V.
Another view of the Voltage selector. It can be pulled out and rotated. Next to it the two fuses. This picture is before the restoration.
More original capacitors and a replaces resistor.
The CRT tube is very small compared to other ones. This picture is before the restoration.
On the bottom multiple replaced capacitors can be seen. This was done some time ago but not by me. Otherwise its in nice condition.
Kriegsmarine Radios and Sonar Equippment 