Update Information

16th April 2013.

• Added Petometer, Plus Adder (no model number), Plus 509/C.

26th January 2013.

• Added new page "Sourcing from other Companies".

30th June 2012.

• Added Fi-Cord Anita 1211 calculator.

25th July 2011.

• Added Plus Adder B calculator.

30th December 2010.

• Added the Victron EC-805 calculator to the ANITA hand-held calculators section.

28th December 2010.

• Updated various pages about the early Mechanical Calculators.
• Added 1943 Sumlock Advertisement to the Advertisements & Brochures Section.

26th December 2010.

• Added Introduction page to the Mechanical Calculators section.

10th November 2010.

• Added Plus Adder D to the Mechanical Calculators section.

12th July 2010.

• Added more photographs and information about the "slim-line" style ANITA 811.

7th June 2010.

• Added more photographs of the alternative style ANITA 811, and photographs of the minitron 841.

5th June 2010.

• Added Adler 85.

16th May 2010.

• Added Sumlock Charts 25 & 26 to the Operating Manuals & Related Materials page.

5th July 2008.

• Added the Transistorised Memory Unit.

17th February 2008.

• Added information about the ANITA Business Computer (ABC).
• Added the experiences of Mike Denman as a Sumlock-Anita Service Engineer to the At work with ANITA and Demise of ANITA & Bell Punch sections.

13th February 2008.

• Photographs and details of ANITA 861 added.

10th November 2007.

• Photographs of ANITA Mk 10 added.

16th August 2007.

• Added further information about the fate of Sumlock Anita and Bell Punch.

16th January 2007.

• Photographs of ANITA 1212D added.

17th July 2006.

• Automaticket Check Adder added.

14th April 2006.

• ANITA 1216 added.

28th March 2006.

• Rockwell 21R added.
• Rockwell 30R added.

18th March 2006.

• More details about the "Pettometer", the forerunner of the Plus Adder, added.
• Additional information added about the Logatronic Visible Computer, Nixdorf Visible Computer, ANITA Business Computer, and the RUF Accounting Machines.

14th January 2006.

• ANITA 102 added.

17th July 2005.

• Photograph of ANITA 1021 added.

25th July 2005.

• Further photographs of inside of the ANITA Mk VII - added.

19th July 2005.

• Chart of Bell Punch Co. and its subsidiaries - added.

17th July 2005.

• Plus 509/F and its connection to Automaticket machines - added.

2nd May 2005.

• Plus Adder ST - added.

9th April 2005.

• Plus 506/T - added.

15th February 2005.

• Added Sumlock Charts 25 & 26 to the ANITA Mk 12 page.

4th January 2005.

• Additional photographs added to the At Work With ANITA page.

2nd January 2005.

• Additional information added about Norbert Kitz and the start of the ANITA development project.

26th December 2004.

• Photograph of ANITA 811 with alternative style of keyboard - added.

11th December 2004.

• Section "A Tour of Company Sites" - added.

24th November 2004.

• Triumph 81 - added.

13th September 2004.

• London Computator Corporation Sumlock 912/S - added.

17th July 2004.

• ANITA 8041 - added.

29th June 2004.

• ANITA 1212D - added.

16th June 2004.

• Plus 509/SP Imperial weight calculator - added.

13th June 2004.

• Calculating charts and proficiency certificate added.

6th May 2004.

• Plus Adder SJ added.
• Operating manual for ANITA 811 added.
• Operating manual for ANITA Mk 11 added.

9th April 2004.

• ANITA 810 added.

23rd March 2004.

• Operating manual for Sumlock "Comptometer" added.

8th March 2004.

• Operating manual for ANITA 831 added.

26th February 2004.

• Operating manual for ANITA 841 added.

18th February 2004.

• Links page added.

26th January 2004.

• ANITA 1020 added.

6th January 2004.

• Mechanical Calculator Days page added.

10th December 2003.

• Plus 509/F added.
• Sumlock Compucorp 320G added.

1st November 2003.

• The section Operating Manuals and Leaflets added.

22nd September 2003.

• Sumlock 912/F Sterling Currency Calculator with Farthings keys added.
• Sumlock 913/CP/S Sterling Currency Calculator with Certopost added.

15th June 2003

• London Computator Corporation 509/S added.

7th June 2003

• Comptograph added.

13th April 2003

• Plus 509/S Sterling currency "Comptometer" added.

5th April 2003

• Operating a "Comptometer" section added.

27th March 2003

• Plus Adder S added.

17th March 2003

• ANITA is Launched section added.

17th February 2003

• Sumlock calculator with Certopost verification device added

5th February 2003

• More advertisements added

4th February 2003

• Plus 509 added

2nd February 2003

• Logatronic Visible Record Computer added

31st January 2003

• Plusograph added.
• Nixdorf Visible Record Computer added.

18th January 2003

• National Calculating Service and Sumlock Comptometer Colleges added
• Wanderer Conti added.

15th January 2003

• ANITA Business Computer added.
• More advertisements added.

6th January 2003

• Photographs of ANITA Mk 9 added.
• Advertisements Section started.
• Section on the Old Sterling Currency added.

30th December 2002

• Initial posting.

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Text & photographs copyright © 2002 - 2013 Nigel Tout, except where noted otherwise.