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 drawings. A "rapidograph"
pen is a trademarked name for one type of technical pen. Technical pens
use either a refillable ink reservoir (Isograph version) or a
replaceable ink cartridge.
History:
Early technical pens (ruling pens) consisted of a small pair of calipers,
having one flat and one bowed leg holding ink between them. By
adjusting the gap between the legs the width of the line drawn by the
pen could be adjusted. Such pens, kept at a constant angle to the paper,
were used for ruling lines, but not for cursive handwriting, nor for off-hand flourishes. The Graphos
technical pen introduced in 1934 miniaturized the caliper principle and
made the points easily interchangeable. The Sheaffer company produced
an expensive drafting set which included such pens for use on linen
prints. These sets were often presented to a draftsperson upon becoming
'time served', which is marking the end of the apprenticeship.
Fountain pen versions:
In the 1950s, fountain pens
with cylindrical points became available, but they were complex
instruments with tubes holding a tiny shaft. To release ink the shaft is
depressed and a line of about the width of the exterior diameter of the
tube can be drawn. Additionally, in later models, the tube had a small
ledge that effectively narrowed its end, that - while maintaining the
line thickness - made the tube thicker along most of its length and also
protected ink from spilling while drawing along the edge of a rule,
set-square, T-square
or other template (the ink had no immediate contact with the template's
edge). Some special, more expensive nibs were equipped with tubes made
of tungsten or with their tips made of synthetic precious stones, to
slow their wear on hard surfaces.
128 GB usb price: 7500rs
Item ID: # 1571
MODEL : DataTraveler® 101 G2
With DataTraveler® 101 G2, budget-conscious users get a combination of useful features, large capacity (up to 128GB) and an easy way to store, carry or transfer data between computers and other devices. With optional urDrive Software, you can take advantage of a convenient built-in Internet browser4 and AppZone for new apps4 to try. DataTraveler 101 G2 features a capless, swivel design and is customizable with your company's logo — a great way to promote your business. It's available in five different colors, depending on the capacity.
Operating System Compatibility urDrive
Windows 7 √ √
Windows Vista (SP1, SP2) √ √
Windows XP (SP2, SP3) √ √
Mac OS v.10.5.x+ √
Linux v.2.6.x+ √
Important Note:
The entire materials provided herein are for reference only. Sahulat IT reserves the right to modify or revise the content at anytime without prior notice.
Advertised performance is based on maximum theoretical interface values from respective Chipset vendors or organization who defined the interface specification. Actual performance may vary by system configuration.
All trademarks and logos are the properties of their respective holders.
