A “virtual reality” headset hand-crafted by Sir David Brewster, a Victorian instrument-maker from Dundee, Scotland – is to be offered for sale at an auction next week, according to The Times. The Brewster stereoscope gave the illusion of depth using the same optical technology as VR headsets. The device, made of walnut and satinwood, held two images side by side which, when observed through lenticular lenses, converged into a single three-dimensional image. It was developed by Sir David Brewster, a Scottish physicist, mathematician, astronomer, inventor, writer, historian of science and university principal. Most noted for his contributions to the field of optics, he studied the