Figure 16

Reconstructed drawing of the diopter on a pedestal. With two "topes" they obtained a "line of sight".
  Figure 16a

There are several of these silver topes with unpointed handles in the Museum of the American Indian (Heye Foundation). We have also seen such pieces made of gold which tourists had carried off. (Cf. in Volume III; Ceramics, the drawing showing how the "tope" was used).