Theodolites

You can take the following steps to measure the vertical angle of a theodolite:

• Set it up at the spot where the vertical angle needs to be measured.
• Level the instrument by using the plate bubble.
• Read the verniers C and D, which you can use to determine the value of the angle.

Be sure to visit Engineering Supply for a broad selection of theodolites and other surveying instruments.

The accuracy of a theodolite depends on the number of seconds it has associated with the instrument. And the lower the number, the more accurate it will be. This number is related to the coordinates of a specific object, which is measures in degrees, minutes, and seconds. So, a theodolite with a smaller second rating will be more accurate than one with a larger rating.

Like a lot of leveling instruments, a theodolite has a telescope that’s mounted to a base (which has a sight at the top that can be used to align the target). There’s a focusing knob that can be used to make the target object clearer, and there’s an eyepiece that you can use to find the object you want to measure. There’s an objective lens on the other side of the telescope, which can be magnified according to your needs.

There are two basic types of theodolites: digital and non-digital. Non-digital theodolites are rarely used, but digital theodolites have a telescope that’s mounted to a base. They also come with an electronic readout that can be used to display horizontal and vertical angles. Digital theodolites are more convenient because they replace the traditional graduated circles, which make readings more accurate.

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If you’re looking for a place where you can find a broad selection of theodolites and other surveying instruments, be sure to look at what we have at Engineering Supply.