1915 · Airborne Spark Transmitter · Work 1323 of 1,871
The open rear cockpit of a two-seat biplane on a grass airfield in northern France at a hot summer noon, high sun on plain pale cream doped linen and varnished wooden spars, on a plywood board in the cockpit a small box-shaped transmitter twenty-two centimetres wide in dark grey-black metal with worn edges, on its left side a large flat spiral coil of bright metal strip in an X-shaped bracket with two plain whitish strips, on top three knurled screws and a rectangular carrying handle, a hinged brass door at the front, every surface plain and unmarked, beside it a small brass Morse key under a hand in a brown leather gauntlet.