Rivista di astronomia e scienze affini, 1912, a. 6, n. 04 (April)
An Italian astronomy journal issue from April 1912, published by the Società astronomica italiana with the Turin observatory, for a scholarly readership of astronomers and students. Its pictures are geometric diagrams: a celestial sphere with meridians and ecliptic circles, a grid of curved meridian lines on a flattened disc, a hemisphere with sun-ray paths, and a sightline construction over a sphere, all drawn in fine black line with lettered points. A designer might take their clean, precise line work and radiating arc patterns for structure and scientific graphics.
