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A trotline is a heavy fishing line with shorter, baited branch lines commonly referred to as snoods suspending down at intervals using clips or swivels, with a hook at the free end of each snood. Trotlines are used in commercial angling and can be set up across a channel , river , or stream to cover an entire span of water.
The presence of the swivel has been said to detract from the effectiveness of some types of lures. [1] Depending on the position of the lure, the hooks can become entangled in various ways with the swivel. It is also noted that swivels can serve as weak points on the line, and therefore lessen the likelihood of landing larger or harder fighting ...
The measurement of uniformity is done using a predefined length of string line (normally the same length used in horizontal alignment) along the track. If the midpoint of the measurement has higher elevation, it is called hump deviation. On the other hand, if the midpoint has lower elevation, it is called dip deviation. [9]
As of Measurement Studio 8.0.1, support for Visual Studio 2005 and .NET 2.0 framework have been included, with support for Windows Vista first adopted in version 8.1.1. Current version of Measurement Studio drops support for multiple versions of Visual Studio including 2008, 2005, .NET 2003 and 6.0. Measurement Studio includes a variety of ...
The bevel protractor is used to establish and test angles to very close tolerances. It reads to 5 arcminutes (5′ or 1 / 12 °) and can measure angles from 0° to 450°. The bevel protractor consists of a beam, a graduated dial, and a blade which is connected to a swivel plate (with Vernier scale) by a thumb nut and clamp.
Trotlining - a trotline is like a dropline, except that a dropline has a series of hooks suspended vertically in the water, while a trotline has a series of hooks suspended horizontally in the water. Trotlines can be physically set in many ways, such as tying each end to something fixed, and adjusting the set of the rest of the line with ...
These graduated circles, known as stadia circles, provide the value of the horizontal and the vertical measurements as a percentage of the inclined stadia measurement. This system is sufficiently precise for locating topographic details such as rivers, bridges, buildings, and roads when an accuracy of 1/500 (0.2%, 2000ppm) is acceptable.
A concern for marine conservation is that droplines are able to access areas that are otherwise natural fish refuges, such as deep sea canyons and seamounts. [1]The Australian Marine Conservation Society rates dropline fishing as having a "moderate impact" on wildlife and a "low impact" on marine habitats.