Exposition tester for the ampilation of photographs (Machine-translation by Google Translate, not legally binding)

摘要

Apparatus for checking exposures for enlarging photographs, characterized essentially by the fact that it consists of a set of any suitable material, such as metal, bakelite, or other related, formed by a base on which at one end thereof has an upright, on which are secured and rotated some screens, of equal size each one of them, which are provided with a window of different size to the others, having been arranged after the amount, a suitable support for the support of the screens in the raised position. (Machine-translation by Google Translate, not legally binding)