Heliograph, glass bowl, an instrument that measures the daily sunlight

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Size: 2628px × 4000px
Photo credit: © Ivan Smuk / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: ancient, antique, device, drawing, engineering, engraved, engraving, etching, guidepost, headland, hedges, heliograph, historic, historical, incrust, instrument, interline, invention, lamp, light, object, overlay, perforation, plot, radar, signal, sun, sunrise, sunset, technical, technological, technology, transfer, vintage