Click on the links to access the user guides. I believe them to be out of copyright, but if this is not the case I will remove them if requested by the copyright owner.
These are scanned copies of originals in my possession. If you would like a higher resolution scan, please contact me at email@example.com
This manual can be dated quite accurately to 1950, because the featured model range includes Models 127 and 129, but Models 137 and 139 have yet to replace Models 37 and 39.
The manual is applicable to almost any model of Odhner pinwheel calculator,with the proviso that the quick rotor clearing system is located differently on 200 Series machines (see the Original Odhner page for details).
The manual is also applicable to any Odhner type of pinwheel calculator, except that there will be differences in operation particularly with regard to clearing the registers and back transfer (if present).
Another Original-Odhner user guide was produced by the British importer, Gilbert Wood (A/M) Limited. It includes a number of worked examples peculiar to the British market:
As far as I can determine, based on the specific machines mentioned, the guide dates from about 1950.
This is a six sided fold-out leaflet (dated 1970) included in the box with the 1048 and 1049 models. Compared with earlier versions, it’s a rather half-hearted effort.
I don’t actually have a paper copy of this manual, but it was sent to me by a fellow collector. Given that Facit machines from the Model TK onwards were functionally identical, this manual can be used for any of them (apart from the CM2-16).
This manual came with my 1955 vintage Facit Model NTK, and is in fact dated 1954. It is applicable to all manual (non-electric) Facit machines with very little adaptation.
This is essentially the same guide as that for the Model NTK, but shows the ‘new’ machine.
This booklet is dated 1952, and contains calculation exercises and examples for Models TK, NEA and ESA-0.
This booklet is dated 1963, and is updated to reference the then-current model range of C1-13, CS1-13 and CA1-13.
This is essentially a German version of Short_Cut_Calculations_With_The_Facit.
This manual is dated 1959, and contains pretty much the same examples as in the Model NTK manual, but includes examples of the use of the back transfer facility .
This manual is dated somewhat later than my Monroe machines, but the LN Series machine illustrated in the manual is identical in operation to the preceding L Series machine.
I don’t actually have a Monroe Model CSA, but someone might find this useful.
This is the instruction manual for the Muldivo Mentor, known outside the UK as the Walther WSR160. Although fairly brief, it does include a square root algorithm.
This manual is written in a style reminiscent of Japanese camera instructions of the period, but is fairly comprehensive.
This is a fairly comprehensive user guide for the top of the range Model 13RK. As usual for the British market, there is a selection of arcane conversion tables at the back.
This manual, dated 1963, is a fairly comprehensive guide to the features of the Model STW. It is notable that, even in 1963, there is no hint of the revolution that is to come. However, that begins to change with:
This manual, dated 1965, gives the features of the Model 132 Electronic Calculator a thorough treatment. It is noteworthy that Friden were still advertising their electro-mechanical range of machines within the same booklet.
This user guide probably dates from the 1960s, and gives a thorough introduction to the capabilities of the Olivetti Divisumma 24. As is often the case with documentation for the British market, there are a number of currency conversion tables in the back of the guide.
The following two-part document isn’t a user guide as such, but it’s an exercise book used by someone who went to a comptometer school. Unfortunately, I don’t know who this person was, but it was the mother of the person who sold me the 1950s Sumlock comptometer.