IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. These clear plastic instruments are ...

According to a company catalog in the accession file, Safe-T model number 45759 was the Safe-T Compass, so that mark on the instruction card is apparently a typo. Number 46109 was the mmArc that sold ...

There are two ways to construct a triangle using a ruler and a protractor. The first is a Side, Angle, Side (SAS) construction where two sides and the angle between them is known. The second is an ...

The Y Ruler, developed by Yuan Design Studio, is multi-functional measuring set, inspired by the ancient Brass Goniometer. It has been redesigned to offer enhanced durability and precision, embodying ...

World Scientific has published a book on the Participatory approach to Modern Geometry by Jay Kappraff. Written to meet a specific need as there is no book on rigorous Euclidean geometry available on ...