The last sheet of the form of the McCaskey Register Co. is cardboard, with the numbers _1_ to _31_ printed along the top. A movable metal "spud," or tip, is used to show the due dates of each invoice, and to enable the collection clerks to quickly find the desired copies of charges for the purpose of sending out statements from three to five days ahead of due dates.
=Styles of Type.= The size and style of type is a very important factor in all classes of work where legible manifolding results are wanted. There are several classes of type used in connection with billing machines. Different companies use different names in describing them. The four sizes of type used are as follows:
ELITE PICA MEDIUM ROMAN LARGE (or full) ROMAN
_Elite._ This style has come into general use in connection with correspondence. It gives a dignified style to a letter. It is the hardest type to keep clean—the most destructive to the rubber roll and typewriter ribbon of any type made. It also manifolds very poorly where a number of copies are used, as the type is so small that the sixth or seventh copy, and many times the third and fourth, are so blurred that it is impossible to tell an _e_ from an _a_ or an _o_.
This style of type is sometimes used for making up tabulated statements where it is desired to crowd a large number of figures to the inch.
_Pica._ This is the most generally used type of any. It manifolds quite well up to six and seven copies. It is possible to write only ten figures of this size to the inch.
_Medium Roman._ This is the next larger size type than the pica and, on account of it being larger, it gives better manifolding results. It also writes ten letters to an inch.
_Large Roman._ This is the size type which is used by railroad and steamship companies for typewriting their way-bills. It is possible to write only eight letters to an inch.
Fig. 21. Forms Showing Properly Designed Stationery ]
_Gothic Type._ The term _Gothic_ indicates the style, and not the size of the type. If the small points at the top and bottom of the Roman type were removed (these points are called _serifs_) the effect would be that of Gothic type. A very pleasing combination on a billing machine is two different sizes of Gothic type, the larger size to be used for capital letters, the smaller size for the small (or lower case) letters. Recent practice has demonstrated the value of using capital Gothic letters of one size, as it increases the legibility of an order or an invoice.