﻿Plate 
  78. 
  — 
  Inca 
  bronze 
  tools, 
  a, 
  Ax; 
  b, 
  chisel; 
  c, 
  knife, 
  ortumi 
  (length 
  of 
  blade 
  

   2y 
  2 
  inches 
  (6.5 
  cm.)) 
  ; 
  d, 
  knife 
  (length 
  of 
  blade 
  5 
  inches 
  (12.4 
  cm.)) 
  ; 
  e, 
  knife 
  (length 
  

   of 
  blade 
  5 
  inches 
  (12.5 
  cm.));/, 
  tweezers 
  (length 
  1 
  finches 
  (4.7 
  cm.)) 
  ;g, 
  tweezers 
  

   (height 
  1 
  inch 
  (2.4 
  cm.)); 
  h, 
  unfinished 
  tweezers. 
  (After 
  Bingham, 
  1930, 
  figs. 
  

   163, 
  165, 
  168, 
  157.) 
  

  

  