[Answer] Abacus column crossword clue

• Abacus column The (plural abaci or abacuses), also called a counting frame, is a calculating tool that has been in use since ancient times and is still in use today.It was used in the ancient Near East, Europe, China, and Russia, centuries before the adoption of the written Arabic numeral system. The exact origin of the is unknown. The essentially consists of a number of rows of movable ...
  
  The is a 2:5 : two heaven beads and five earth beads. If one compares the to the soroban which is a 1:4 , one might think there are two "extra" beads in each . In fact, to represent decimal numbers and add or subtract such numbers, one strictly needs only one upper bead and four lower beads on each .A or pillar in architecture and structural engineering is a structural element that transmits, through compression, the weight of the structure above to other structural elements below.In other words, a is a compression member.The term applies especially to a large round support (the shaft of the ) with a capital and a base or pedestal, which is made of stone, or ...
  
  In architecture the (from the Latin caput, or "head") or chapiter forms the topmost member of a (or a pilaster).It mediates between the and the load thrusting down upon it, broadening the area of the

Answer: TENS

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