The Class 21 of 1950
by J. D. LIGHT,
Head of CRD Sales Training: National Post October 1961 page 2

The all-electric ITEMmatic Class 21
AN EXCELLENT ARTICLE ON THE CLASS 100, BY C. J. DOBBINS, Advertising and Public Relations, was published in the December 1960 issue of the Post. This, the second of the Cash Register series, deals with another of our Dundee precision-built machines—the Class 21—which is now popularly referred to as the `ITEMmatic.' This is a compact, high-speed, high-capacity register incorporating ... automatic totaling of several item sales, otherwise known as itemisation. Itemisation means the mechanical addition of a sale which comprises more than one item. The register will accumulate all these recorded amounts in a separate itemising total as well as the control total (or totals).

The Control Lock and Key

The Detail Audit Strip (Autographic)
All models are fitted with this locked-in Audit Record which is visible through a transparent cover, accessible only to an authorised person. The register automatically prints a permanent printed detailed 'Audit Record' of every transaction in the order in which it occurs, together with its Classification print. By using a hand spacing control, spaces can be set on the Audit Record and an opening in the Audit Record window is provided so that any written information can be added for the purpose of control over any particular transaction. A push button, just below the window, controls the light which illuminates the Audit Strip when required.

Printed Totals
All Class 21s print their Total(s) on the Audit Strip. An up-to-the-minute Total of Sales is instantly available at any time of the day. The total(s) can be printed either as a 'Reading' Total(s), which does not affect the accumulated amount, or as a 'Final' Total(s), the printing of which automatically resets the Total(s) to zero. A 'Proof of Clearance' can be printed after the Final Total(s) to prove that the Total mechanism has been 'Reset'.
The Reading Total is identified by an 'X' symbol—Final Total by a printed 'Z'. Reading and Final Totals are available only to authorised persons in possession of the individual Read and Reset Keys.

Printed Sales Bill
Certain models issue a Printed Sales Bill. Depending on the construction of the machine the Printed Sales Bill will show all or part of the following:
The date, consecutive number (when furnished), amount of each item, assistant and/or department symbols (when furnished), total automatically spaced, type of transaction identification, the name and address of the business or some promotional message.
The Printed Sales Bill, which is automatically issued for each transaction, is a detailed mechanically-added check list and is both a courteous gesture to the shop's customer and a powerful protective feature over all transactions, thus promoting goodwill and confidence in the shop's business methods. Also, with a printed sales bill the shop keeper no longer experiences—losses through errors in addition—forgotten items—illegible figures—carry-over errors—and doubts as to his assistants' accuracy. All register totals also print on the sales bill.
Some models are equipped with a Slip Printer for certification of written records in lieu of a Sales Bill Printer. This gives protection over weaknesses of handwritten figures.
Subtraction Feature
This feature is available on certain models and is accomplished through the 'Refund' key. It is used to deduct Refunds, Returns, Discounts, etc., where required.
Control Lock and Key
All operations of the register and its records are under lock and key controls. The special lock controls the following positions: Reset Total, Adding, Read Total, Lock Register, Register.
The Built-in Adding Machine
The register can also be used as a fast adding machine; therefore, it is two machines in one. This adding feature can be used during the day without disturbing the Total(s) for such purposes as adding Invoices, State­ments, Inventories, Stock Control, etc., or the Duplex adding feature can be used after the Total(s) has been reset. To prevent mis-use only a person. in possession of the Control Reset Key can authorise the use of this valuable feature. When used identification is made by the symbol '+' printed next to the amount(s) on the Audit Strip and/or Sales Bill.
Activity Counters
An automatic analysis of activity is provided showing the number of types of transactions—dependent on construction—handled in Retail business with the number of customers served. The average sale is easily determined—an important statistic which indi­cates the rise and fall in value of customers' purchases.
A counter is also provided which controls the number of times the Control Total is reset.
The Quick-change Cash Drawer
The Cash Drawer unit has a roller-bearing twin-rail mounting which ensures a free, smooth and dead-level movement. Into a drawer is fitted a removable metal Cash Tray with a well-planned lay-out of 'curved' coin and note compartments which ensures an orderly arrangement of cash and facilitates rapid and accurate change-making. All cash can be removed from the register instantly, at any time of the day, simply by lifting out the metal tray, the contents of which can be secured in the tray by a lockable lid. Some models are fitted with a plastic cash drawer instead.
In conclusion, this register, which is the only all-electric, automatic item-totalling cash register made entirely in Great Britain, has already sold in greater numbers than any other Itemiser. Its popularity, for Self-Service check-out operation together with its name `ITEMmatic' has given rise to a belief, still too widespread, that it is designed exclusively for those applications where listing of items is involved. This is erroneous. In fact, the Class 21 can be employed with advantage in the place of any single-total cash register and many two-total registers formerly produced.
The Reset and Activity Counters

The Indication and What It Does
Item-by-Item `two-way' Indication—Demands Accuracy of Registration.
The amount registered for each item is displayed at the front and the back of the register for everyone to see ... in the same order that you would naturally read and write this and, after showing the amount of each item individually, the Indication displays the mechanically accurate Total Amount of the Sale. Customers like this item-by-item Indication as they can see that the right price is recorded for each article and, because they know that the prices charged are mechanically added, they never dispute the total.
The Fully Flexible Keyboard
The Class 21 has a fully flexible keyboard and any amount from 1d. to £99. 19s. 11 ½ d. can be registered at one time on most models. All amounts entered on the keyboard can be checked at a glance before being recorded and a key depressed in error can be corrected by depressing the correct key in the same row. If several keys have been wrongly depressed they can be returned to their normal position by means of the Release Lever. Certain models of the Class 21 are equipped with Classification Print Keys for the purpose of analysing turnover in the manner best suited to the business. Typical use of these keys: Dissection by Assistants, Classes of Merchandise, or in the case of Service Trades, the type of Service. Some models have Charge (Credit), Received on Account and Paid Out Keys.