Astronomical instruments. See also Clocks. Globes. Celestial. Photography. Celestial. Photometry. Stellar.
And Names of instruments, etc.: as, Almucantar. Coelostat. Astrolabe. Heliomicrometer. Chronograph. Helioscope.
{Continued on the next card.]
Thi* sard was printed at the Boston ae Public Library, August 16, 1927.
N3730