Bosch NEM 74 - Manual (Page 9)

9
On these elements, the size can be changed.
Settings:
Turn the knob to the right to use the inner and outer ring.
Turn the knob to the left to use only the inner ring.
The bridge element connects with one single element to form a long element for
griddles or roasters.
It can also be use to connect two single elements. This forms an even longer
element for larger griddles and roasters
.
Turn the knob to the right. To use only the single element, turn the knob to the left.
Dual element
Bridge element
Using the bridge element with one
single element