Delta Test Strip Printer, Print Projection Calculator Scale

The new way to get perfect black and white pictures.

One of the most difficult things to teach when a student of photography is in the darkroom is how to get a correct exposure for their negatives.

In time the eye becomes expert at choosing the best timed exposure but now a little help is now at hand from the Delta to get students to that point.

The Delta Projection Print Calculator Scale gives perfect exposures every time. It has eight pie wedges of calibrated, graduated density that help determine the exposure time, by showing the time in seconds.

All it takes is one test exposure; you place the unit onto of a piece of graded or multigrade paper and then exposure your negative in the enlarger for 60 seconds. After developing this test exposure you simply select the exposure time in seconds that corresponds to the best appearing sector.

The Delta Projection Print Calculator Scale is easy to use, saves time, paper, and chemistry. The scale is 4 x 5 inches in dimension.