Radiation from and the melting points of palladium and platinum
A 1907 physics paper from the National Bureau of Standards reporting measurements of radiation and the melting points of palladium and platinum, written for laboratory researchers and instrument makers. The line engravings show optical pyrometer and furnace apparatus in section, wiring circuits with batteries, resistors and dial meters, and hatched cutaway views — useful for schematic diagram styling and technical hatching patterns.
