This description is neither too technical nor too general; it carries conviction, it is specific enough to appeal to a master carpenter, and it is clear enough to be understood by the layman who never handled a saw or planer.
It may be laid down as a principle that long description should ordinarily be made in circulars, folders or catalogues that are enclosed with the letter or sent in a separate envelope, but sometimes it is desirable to emphasize certain points in the letter. Happy is the man who can eject enough originality into this description to make it easy reading. The majority of correspondents, in describing the parts of an automobile, would say:
"The celebrated Imperial Wheel Bearings are used, These do not need to be oiled oftener than once in six months."
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A correspondent who knew how to throw light into dark places said:
"Imperial Wheel Bearings: grease twice a year and forget."
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This "and forget" is such a clever stroke that you are carried on through the rest of the letter, and you are not bored with the figures and detailed description.
In a similar way a sales manager, in writing the advertising matter for a motor cycle, leads up to his description of the motor and its capacity by the brief statement: "No limit to speed but the law." This is a friction clutch on the imagination that carries the reader's interest to the end.
One writer avoids bringing technical descriptions into his letters, at the same time carrying conviction as to the quality of his goods: