They did not take us unawares, however, for we never turned cattle from corral until the assistant wagon boss surveyed the locality in every direction with a field glass, for the tricky redskin might be over the next sand hill.
As the day dawned, with the aid of a field glass, I discovered Indians swooping down on the ranch with the stockade at breakneck speed, and others coming in our direction.
Nearer the cloud of dust approached and the closer I looked with my field glass until I discovered they were Apaches making all haste to reach the mountains.
On scanning the plain with my field glass I saw a column of dust rising far to the north like a pillar of smoke and rightly guessed it to be caused by a body of horsemen.
A lookout had climbed a tall cebra tree and was watching with a field glass.
An opera glass is a great deal better than no glass at all; a field glass is better still, and a Bausch & Lomb binocular of six to eight magnifying power is the best of all; being almost equal to having the bird in hand.
At the moment the boys observed them, the elder Texan was holding the field glass levelled, while Lattin was doing what he could in the way of observation by shading his eyes with one hand.
If they possessed a field glass, as he believed was likely, they must have discerned him at the foot of the hills, provided the instrument was turned in that direction.
The most important and essential quality of a telescope or field glass is definition, i.
The light of the telescope or field glass is expressed by the number which shows how many times brighter the object appears through the instrument than to the naked eye.
The power of a field glass can be roughly determined by focusing the instrument on a wall or a range rod, by looking at the object through the instrument with one eye and at the same object directly with the unaided eye.
The "visual angle" or "field" of a field glass is always smaller, no field glass having yet been designed which could equal the field of the unaided eye.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "field glass" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
