Prontor

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The Prontor is a series of leaf shutters that were made by the German company Gauthier.

The Prontor II exists with the following speed ranges:

• T, B, 175, 100, 50, 25, 10, 5, 2, 1
• 200, 100, 50, 25, 10, 5, 2, 1, B, T