In use the film speed is set. The reading is taken which moves an arm over a graph. Along the arm are aperture values which can be traced over the graph to a column of shutter speeds. With this method only the film speed has to be set to take a reading. Later versions have the film speed setting knob on the side of the meter. Made in Holland.

This was produced in still and cine versions and, later, for the Leica. Later versions have an aperture scale printed above the light value scale in the meter window, this gave a quick reading for a set film speed and shutter speed. In use the film speed is set against an index. The reading is taken, the value shown is used to look up a series of shutter speed / aperture pairs.

A popular photoelectric meter produced in Regular, Cine and Leica versions. In use the reading is taken, a needle moves over a scale showing shutter speeds. The value shown is set against the film speed, the full range of shutter speed / aperture pairs can then be read.

In use the needle moves across a scale, the value is transferred to the calculator and the shutter speed / aperture pairs can be read. The extinction meter is for use in poor light. Up to three values can be seen in the finder one of which is transferred to the calculator. As well as the Standard model there were versions calibrated for the Leica and cine use. An extra sensitive version (Standard and Leica models) was also made. The price was £4.10.0.