Navigation, Claes Andrieszoon Goutum (attributed to), c. 1590 - c. 1596 Graadstok, a wooden stick with a square cross -section. Complementary degrees of 0-90 degrees were scratched on two opposite sides. In addition to numbers, inscriptions are stamped in addition to numbers, which shows which side was used for reading the height (when observing the height of the pole star) and which for the top distance (when observing the sun height). The slider, which must have been cm long, is missing. The stick that must have been 85 cm has been broken down. Amsterdam wood (plant material). ebony (w
Navigation, Claes Andrieszoon Goutum (attributed to), c. 1590 - c. 1596 Graadstok, a wooden stick with a square cross -section. Complementary degrees of 0-90 degrees were scratched on two opposite sides. In addition to numbers, inscriptions are stamped in addition to numbers, which shows which side was used for reading the height (when observing the height of the pole star) and which for the top distance (when observing the sun height). The slider, which must have been cm long, is missing. The stick that must have been 85 cm has been broken down. Amsterdam wood (plant material). ebony (wood) cutting Nova Zembla. Saving Huys
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