File:41598 2021 84310 Fig5 HTML.jpg

English: Mechanisms between b1 and the Strap. (a) Mean sun: Mean Sun bar attached to pierced block shown in Fig. 4e; tube and gear for input into Moon phase mechanism. (b) Nodes: Gears of Nodes mechanism, matching bearing in Fig. 4f—gear train 49 ~ 62 + 64 ~ 48—with output tube and double-ended Dragon Hand. (c) Venus: Base gears of Venus mechanism match features in Fig. 4g. Gear train 51 ~ 44 + 34 ~ 26 ~ 63—with components from Fragment D as reconstructed in Fig. 4p, plus output tube and Venus ring with lapis lazuli marker. The epicyclic gears 26 ~ 63 for Venus turn in the D-plate that is attached to the Strap (not shown). The end of the follower can be seen behind the disk. (d) Mercury: Base gears of Mercury mechanism match features in Fig. 4h. Gear train 51 ~ 72 + 89 ~ 40 ~ 20—plus output tube and Mercury ring with turquoise marker. The epicyclic gears 40 ~ 20 for Mercury turn directly in the Strap (not shown). The follower can be seen behind the left-hand side of the Mercury ring.