Самодельная астрономическая труба
A Russian amateur's manual on building an astronomical telescope at home, written by A. A. Chikin and published in 1927 for Soviet hobbyists and school workshops. The twelve figures are plain line drawings of mounts, clamps, tube fittings and wooden supports, shaded with hatching and cut-away sections and labelled with Cyrillic and Latin letters, useful as technical diagram motifs.
