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The Curta is a hand-held mechanical calculator designed by Curt Herzstark. [1] It is known for its extremely compact design: a small cylinder that fits in the palm of the hand. It was affectionately known as the "pepper grinder" or "peppermill" due to its shape and means of operation; its superficial resemblance to a certain type of hand ...
Curt Herzstark (January 26, 1902 – October 27, 1988) was an Austrian engineer. During World War II , he designed plans for a mechanical pocket calculator (the Curta ). Life and career
A punch down tool, punchdown tool, IDC tool, or a Krone tool (named after the Krone LSA-PLUS connector), is a small hand tool used by telecommunication and network technicians. It is used for inserting wire into insulation-displacement connectors on punch down blocks , patch panels , keystone modules , and surface mount boxes (also known as ...
A file is a tool used to remove fine amounts of material from a workpiece. It is common in woodworking , metalworking , and other similar trade and hobby tasks. Most are hand tools , made of a case hardened steel bar of rectangular, square, triangular, or round cross-section, with one or more surfaces cut with sharp, generally parallel teeth.
A dead weight tester (DWT) is a calibration standard method that uses a piston cylinder on which a load is placed to make an equilibrium with an applied pressure underneath the piston. Deadweight testers are secondary standards which means that the pressure measured by a deadweight tester is defined through other quantities: length, mass and time.
A tool is considered low velocity if the average test velocity of the fastener is not in excess of 300 ft/s (91 m/s) with no single test having a velocity of over 108 m/s (350 ft/s). [1] A high velocity tool propels or discharges a stud, pin, or fastener in excess of 300 ft/s (91 m/s). [1]
For instance, the flat face can be used for planishing and smoothing and for hand shrinking thicker soft metals. Whereas a large hickory "torpedo mallet's" striking weight makes it best suitable for shaping soft metals such as aluminum or copper, but a similar torpedo mallet made from heavy black rubber has a striking weight which is best used ...
In the process of removing the barge, the line between the barges at Pier 52 and the barges at the Public Pier was removed. After the removal of the line, the barges at Pier 52 broke free. This resulted in the sinking of Anna C. [5] The United States, lessee of the Anna C, sued Carroll Towing Co., owner of the Carroll in an indemnity action.