Surveying Instruments

The Abney Level is named after Captain William Abney of the School of Military Engineering, Chatham, England It is also called an "Angle Sextant" & measures the angle of inclination. To observe the level bubble the front end of the telescope extends. Aligning the bubble with a line in the scope helps read the angle of inclination off the vernier scale on the side. A little magnifier helps to read the angle of the scale. The sprit level can be adjusted with two screws on either side. The abney level comes with a wooden box. The length of the viewing pipe is 12.8 cm when shut & 18 cm extended. It stands 6cm tall & weighs 180 grams.
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This Theodolite looks precisely like the ones made in the eighteenth century in England. Its design, size, dimensions & specification is similar to antique theodolites.

Surveyors the world over use theodolites to this day. Theodolite are said to be a surveyors` most important & essential friend. They are the only instruments that simultaneously measure the horizontal angles between two points and their angle of elevation. The compass in the centre has a locking device. A little lever presses down to lock the needle for safe transport when not in use. There is a grove under the stand with threads to mount the piece on a surveyor's tripod. For precision levelling there are three adjustable screws in the base & a sprit level. The two vernier scales can be read through the magnifiers. The image is viewed through an inverting telescope with a lens cover in front. The telescope has a double focusing. A side knob to get the image into focus & the screw near the eyepiece for fine adjustments. This piece is made of solid brass & comes in its own wooden box. It weighs 9 kgs & 12 kgs when packed.

It stands 36 cm tall & the diameter of the base is 15 cm.

Its telescope is 20 cm long & it has a triangular base with each side of the triangle 12 cm in length.
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This Theodolite is a smaller version of the 14-inch one. It has all the features of the larger piece.

It looks precisely like the ones made in the eighteenth century in England. Its design, size, dimensions & specification is similar to antique theodolites.

Surveyors the world over use theodolites to this day. Theodolite are said to be a surveyors` most important & essential friend. They are the only instruments that simultaneously measure the horizontal angles between two points and their angle of elevation. The compass in the centre has a locking device. A little lever presses down to lock the needle for safe transport when not in use. There is a grove under the stand with threads to mount the piece on a surveyor's tripod. For precision levelling there are three adjustable screws in the base & a sprit level. The two vernier scales can be read through the magnifiers. The image is viewed through an inverting telescope with a lens cover in front. The telescope has a double focusing. A side knob to get the image into focus & the screw near the eyepiece for fine adjustments. This piece is made of solid brass & comes in its own wooden box. It weighs 7 kgs with its wooden box & 9 kgs when packed for shipping.

It stands 28 cm tall & the diameter of the base is 10 cm.
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This Theodolite is a smallest version in the range. It has all the features of the two larger pieces.

It looks precisely like the ones made in the eighteenth century in England. Its design, size, dimensions & specification is similar to antique theodolites.

Surveyors the world over use theodolites to this day. Theodolite are said to be a surveyors` most important & essential friend. They are the only instruments that simultaneously measure the horizontal angles between two points and their angle of elevation. The compass in the centre has a locking device. A little lever presses down to lock the needle for safe transport when not in use. There is a grove under the stand with threads to mount the piece on a surveyor's tripod. For precision levelling there are three adjustable screws in the base & a sprit level. The two vernier scales can be read through the magnifiers. The image is viewed through an inverting telescope with a lens cover in front. The telescope has a double focusing. A side knob to get the image into focus & the screw near the eyepiece for fine adjustments. This piece is made of solid brass & comes in its own wooden box. It weighs 0 kgs

It stands 22 cm tall & the diameter of the base is 10 cm.

This is the most popular theodolite & makes an excellent conversation piece.
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The 6-inch Road Level is a smaller version of the larger one. A Road Level is also called "Dumpy Level" or "Engineering Transit Level". It is a precision instrument used by civil engineers to find the height of objects with the help of a line parallel to the horizon. At the top we have an adjustable level protected by a cover under which is a mirror. This mirror helps reading the sprit level. The viewing telescope is 9 inches long, which gives an inverted image. This image is focused in two ways, from the side & near the eyepiece for fine adjustments. . There is a cover in the front of the telescope for added protection of the lens during transportation. The compass has a locking device. A little lever presses down to lock the needle for safe transport when not in use. Readings on the compass are magnified & read through a prism on the side. There is a grove under the stand with threads to mount the piece on a surveyor's tripod. For precision levelling there are three adjustable screws in the base.

The length of the telescope is 21 cm & it stands 16 cm tall. It weighs 4 kg when packed for shipping & comes in a wooden presentation/storage box.
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The 4-inch Road Level is a miniature version of the larger ones. A Road Level is also called "Dumpy Level" or "Engineering Transit Level". It is a precision instrument used by civil engineers to find the height of objects with the help of a line parallel to the horizon. The viewing telescope is 4 inches long, which gives an inverted image. This image is focused in two ways, from the side & near the eyepiece for fine adjustments. . There is a cover in the front of the telescope for added protection of the lens during transportation. The compass is below the telescope. There is a grove under the stand with threads to mount the piece on a surveyor's tripod. For precision levelling there are three adjustable screws in the base. An adjustable level on the left side level is protected by a strip cover under which is a mirror. This mirror helps reading the sprit level. The length of the telescope is 10 cm & it stands 10.5 cm tall. It weighs 2 kg when packed for shipping & comes in a wooden presentation/ storage box.

The miniature dumpy level is a very popular item. It looks very cute & attractive on an office desk.
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