A-A-2916A
Type II Pens shall consist of a round barrel, a trim band, a cylindrical ink cartridge containing permanent ink having a non-corrosive ball with a length no less than 117.5 mm (4 5/8 inches). When specified, this pen shall be furnished with a weldless bead chain which shall be at least 609.6 mm (24 inches) in length. One end of securing device shall be attached in the non-writing end of the pen by means of a detachable sleeve or similar means concealed within the barrel. The free end of the chain shall be provided with a fastener having an eye with an inside diameter of at least 2.4 mm (3/2 inches) or other commercially accepted means of securing the pen. This pen is available as a medium point with blue ink.
3.3 Type III Pen Sets:
3.3.1 Base. The base shall be of glass, metal, ceramics, plastic, rubber, or a combination of these materials. The base shall be of stable construction and shall be provided with a pad or feet which will not mar a desk top. The pad or feet shall have non-skid properties and be made of natural or synthetic rubber, cork, a combination of rubber and cork, or felt. Vacuum-type base pads or pads with a pressure-sensitive adhesive will not be acceptable. The non-skid type pad or feet shall provide the base with an appreciable resistant to lateral pressure and shall provide no resistance to vertical lift. The base without assembly shall weght not less than 170.0 grams (6 ounces). The base shall be designed in such a manner that parts will not become separated. If round, the area of the base shall not be less than 51.61 sq. cm (8 square inches) and not more than 103.22 sq.cm (16 square inches) and the area of the base shall be not less than 77.41 sq.cm (12 square inches) and not more than 129.03 sq. cm (20 square inches). Exclusive of hinged socket, the height shall not exceed 76.2 mm (3 inches).
3.3.2 Pen Assembly. The pen assembly shall be of such design that it will fit the base socket snugly. The pen assembly including the writing tip shall not exceed 190.5 mm (7 1/2 inches) in length and shall be not less than 146.05 mm (5 3/4 inches) in length. It shall have an outside diameter of not less than 7.6 mm (0.030 inches) and not more than 12.6 mm (0.495 inches) at the maximum diameter of the barrel. This pen is available in medium point with black ink.
3.3.3 Barrel. The barrel shall be of plastic, metal, or a combination of these materials, and shall be smoothly finished. The barrel shall be smoothly tapered from the maximum diameter to form a comfortable grip at the writing end, and from tth maximum diameter to the non-writing end to form a smooth rounded tip. The barrel shall be provided with matching external threads, which when joined, shall form a rigid barrel. Threads shall be of such size and pitch to produce smooth action in joining barrel sections and withstands ordinary conditions of use. Where strength of the joint is dependent upon the threaded parts only, the threaded portion of each section shall be a minimum of 6.35 mm (1/4 inch).
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