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Demand for a Sign Pen was so extraordinary that the Tokyo factories could not supply all requests. [8] The Sign Pen was one of Pentel's most successful products with more than two billion units sold. [2] In 1971 the company changed its name to "Pentel Co. Ltd." and one year later, the green rollerball pen with water-based ink, was launched. [2]
A clutch pencil (or leadholder) tends to use thicker leads (2.0–5.6 mm) and generally holds only one piece of lead at a time. A typical clutch pencil is activated by pressing the eraser cap on the top, to open the jaws inside the tip and allow the lead to freely drop through from the barrel (or back into it when retracting).
Staedtler technical pens Staedtler technical pen divided in parts in comparison with 1 cent euro coin Macro image of a 0.7 mm Rotring Rapidograph nib showing the flow control wire. A technical pen is a specialized instrument used by an engineer, architect, or drafter to make lines of constant width for architectural, engineering, or technical ...
Although Mitsubishi Pencil started as a wooden pencil manufacturer, the company is no longer specialized in that product, focusing on mechanical pencils instead. [16] Uni-ball's writing implements brands include Jetstream (hybrid-ink ballpoint pens); Air, Eye (marketed as Vision in the U.S.A.) rollerball pens, Signo (pigment ink gel pens); Onyx, Kuru Toga (mechanical pencils); [17] Paint ...
Sectors in the syringe and needle market include disposable and safety syringes, injection pens, needleless injectors, insulin pumps, and specialty needles. [2] Hypodermic syringes are used with hypodermic needles to inject liquid or gases into body tissues, or to remove from the body.
Slot screw drives have a single horizontal indentation (the slot) in the fastener head and is driven by a "common blade" or flat-bladed screwdriver.This form was the first type of screw drive to be developed, and, for centuries, it was the simplest and cheapest to make because it can just be sawed or filed.
Changing the tip of a DTI is not as simple an affair as changing the tip of a drop indicator, because the tip, being a lever, has its length precisely matched to the clockwork inside the indicator, so that the length of the arc of its extremity's movement has a known ratio to the gears that drive the dial's needle. Thus to add a longer or ...
The M45 Quadmount was a towed anti-aircraft gun consisting of four .50 caliber M2 Browning machine guns mounted in pairs on either side of an armored open-top gunner's compartment with electrical laying.