The following year, Ludwig Blattner began work that eventually produced the Blattnerphone, enhancing it to use steel tape instead of wire.
22.
Tailor's tape measures may seem like a good substitute for steel tape, but they stretch after frequent use and can be inaccurate.
23.
For local detail surveys, tacheometers are commonly employed although the old-fashioned rectangular technique using angle prism and steel tape is still an inexpensive alternative.
24.
The wire or cable may be further protected with substances like paraffin, some kind of preservative compound, bitumen, lead, aluminum sheathing, or steel taping.
25.
The steel tapes ) to set the instrument exactly over a fixed survey marker or to transcribe positions onto the ground for placing a marker.
26.
After the officials scrambled to find an old-fashioned steel tape measure, Beamon's distance of 8.90 meters ( 29 feet, 2 1 / 2 inches ) was posted.
27.
These instruments included an alidade, dumpy level, theodolite, Gunter's chain ( which was replaced by a steel tape ) and a solar compass or a vernier compass.
28.
The next layer, known as the " tension member ", consists of either steel cable or flat steel tape, and provides the handrail with tensile strength and flexibility.
29.
The choice of Perron, 28, comes exactly one year after Dallas aerobics teacher Leisa Hart, also 28, was picked to star in the video line's Buns of Steel tapes.
30.
When cables must run where exposed to mechanical damage, they may be protected with flexible steel tape or wire armor, which may also be covered by a water-resistant jacket.
