Cross-reference

/Cross-reference
Cross-reference2018-03-01T08:34:07+02:00

Nomenclature

All primitive models 12 and 16 with the letter “e” have an electric motor
All models with the letter “L” are semi-automatic machines (no automatic multiplication)
All models with the letter “A” are fully-automatic machines
All models with the letter “B” have technical improvements compared to the corresponding “A” model
All models with the letter “T” have a cumulative Register (Register IV or Triplex)
All models with the letter “Z” have a complete capacity carry-over in the Result Register
All models with the letter “S” have a tabulator of 10 keys for controlling the left carriage stop
All models with the letter “V” have a dividend set-up key, provided that they have no “T” nor “S” letter
All models with the letter “G” have the following modernizations (mid-1950s):

  1. A new bottom plate
  2. A device for inverting the revolution Register
  3. A new modernized keyboard
  4. Always grey color

Letters are presented above in the order of priority with which the naming of machines is built.

 
Gradually, various models evolved and the old ones were replaced.
 
Basis modelReplaced by
16L16LG
16LV16LS
20L20LVG
20LV20LS
20LZV20LZS
20AV20AS
20AZV20AZS
20AT20ATG
20ATZ20ATZG
 
Known codenames
 
ModelCodename
12ePOSS
16ePONA
16LGPONADELGE
16LSESPONA
20LSESPOLO
20LZSESPOZET
20LVGPOLDIVGE
20ASESTROLO
20AZSESTROZET
20ATZTRIPLOZET
20AGTOPOGE
20ATGTRIPOGE
20ATZGTRIZEGE

The semi-automatic machines

Identification of models 12 and 16

 12/12e12eN16/16e16eN16L16LV16LG16LVG16LZG16LZVG16LS
Keyboard - #columns
88888888888
Register I - #digits
1212161616161616161616
Register II - #digits
66888888888
Register III - #digits
8N/A8N/A8888888
Dividend Set-up key
yesyesyesyes
Tabulator stops
yes
Keyboard clearing key
circularcircularcircularcircularcircularcircularsquaresquaresquaresquaresquare
Full-capacity carry-over
yes (#)yes (#)
Repeat-key, marked "REP" or plain
markedmarkedmarkedmarkedplainplainplainplainplainplainplain
Usual colour
blackgreyblackgreyblackblackgreygreygreygreygrey
Carriage shift keys
N/AR-LN/AR-Lbothbothbothbothbothbothboth
Corr keyyesyesyesyes

Identification of models 20

 20/20e20L20LT20LZ20LV20LZV20LG20LVG20LZS20LZVG20LS
Keyboard - #columns
1010101010101010101010
Register I - #digits
2020202020202020202020
Register II - #digits
101010 x 21010101010101010
Register III - #digits
1010101010101010101010
Register IVyes
Dividend Set-up key
yesyesyesyesyesyesyes
Tabulator stops
yesyes
Keyboard clearing key
circularcircularcircularcircularcircularcircularsquaresquaresquaresquaresquare
Full-capacity carry-over
yes(#)yes(#)yes (#)yes (#)
Repeat-key, marked "REP" or plain
markedplainplainplainplainplainplainplainplainplainplain
Usual colour
black / greyblackblackblackblackblackgreygreygreygreygrey
Split-lever for partial clearing
yesyesyesyesyesyesyesyesyesyes
Carriage shift keys
N/Abothbothbothbothbothbothbothbothbothboth
Corr key
yes
# Test the feature by subtracting 1 after clearing all the registers. If the result in Register I is set to all “9”, the machine is a “Z” model.

The fully-automatic machines

Identification of "Type A" models

 20A20AT20ATZ20AV20AZV20AG20ATG20ATZG20AS20AZS
Keyboard - #columns
10101010101010101010
Register I - #digits
20202020202020202020
Register II - #digits
1010 x 21010101010 x 2101010
Register III - #digits
10101010101010101010
Register IV
yesyesyesyes
Register V
yesyesyesyesyesyesyesyesyesyes
Dividend Set-up key
yes*yesyesyesyesyesyesyes
Tabulator stops
yesyes
Keyboard clearing key
circularcircularcircularcircularcircularsquaresquaresquaresquaresquare
Full-capacity carry-over
yes (#)yes (#)yes (#)yes (#)
Usual colour
blackblackblackblackblack / greygreygreygreygreygrey
Split-lever for partial clearing
yesyesyesyesyesyes
Negative multiplier bar
N/AN/AN/AN/AN/AN/AN/AN/AN/AN/A
* A variant, mamed “AT Tripolo” has no Dividend Set-up key.

Identification of "Type B" models

 20BG20BVG20BZVG20BTG20BTZG20BS20BZS
Keyboard - #columns
10101010101010
Register I - #digits
20202020202020
Register II - #digits
10101010 x 2101010
Register III - #digits
10101010101010
Register IV
yesyes
Register V
yesyesyesyesyesyesyes
Dividend Set-up key
yesyesyesyesyesyes
Tabulator stops
yesyes
Keyboard clearing key
squaresquaresquaresquaresquaresquaresquare
Full-capacity carry-over
yes (#)yes( #)yes (#)
Usual colour
greygreygreygreygreygreygrey
Split-lever for partial clearing
yesyesyesyes
Negative multiplier bar
yesyes*yesyesyesyesyes
* A variant has a “+/-” lever, right nearby the keyboard clearing key, instead of the negative multiplier bar, as for the model 20ATG.
# Test the feature by subtracting 1 after clearing all the registers. If the result in Register I is set to all “9”, the machine is a “Z” model.

A special adaptation of the 20BTG (named 20BTR) and of the 20BTZG (named 20BTZR) allows transfer between Register IV and Register I, or vice versa.