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2. Opisometer - Wikipedia

   en.wikipedia.org/wiki/Opisometer

   line length = wheel circumference × teeth counted/teeth on wheel. In more sophisticated models, sometimes called a chartometer, the wheel is connected via gearing to a rotary dial from which the line length can be directly read. [1] The instrument is most commonly used to measure the lengths of roads, rivers and other line features on maps ...

3. Surveyor's wheel - Wikipedia

   en.wikipedia.org/wiki/Surveyor's_wheel

   They are often used by road maintenance or underground utility workers and by farmers for fast measures over distances too inconvenient to measure with a surveyor's tape. The surveyor's wheel measures the distance along a surface, whereas in normal land surveying, distances between points are usually measured horizontally with vertical ...

4. Radius gauge - Wikipedia

   en.wikipedia.org/wiki/Radius_gauge

   Two types of radius gauges. A radius gauge, also known as a fillet gauge, [1] is a tool used to measure the radius of an object. [2] Radius gauges require a bright light behind the object to be measured. The gauge is placed against the edge to be checked and any light leakage between the blade and edge indicates a mismatch that requires ...

5. Bore gauge - Wikipedia

   en.wikipedia.org/wiki/Bore_gauge

   It has stem with ball at both ends. The length range of the stem depends upon the width of the part. If you want to measure the diameter set the gauges required diameter with master. [clarify] In order to measure the diameter of the bore, place the beam at one end and slide the other end on the diameter and watch the dial indicator. The values ...

6. Gauge (instrument) - Wikipedia

   en.wikipedia.org/wiki/Gauge_(instrument)

   a device used to measure the strain of an object. Thread pitch gauge, also called a threading gauge, pitch gauge, or screw gauge a device used to measure the pitch or lead of screw threads. Vernier height gauge: a measuring device used either for determining the height of something, or for repetitious marking of items to be worked on.

7. Compass (drawing tool) - Wikipedia

   en.wikipedia.org/wiki/Compass_(drawing_tool)

   Compasses are usually made of metal or plastic, and consist of two "legs" connected by a hinge which can be adjusted to allow changing of the radius of the circle drawn. . Typically one leg has a spike at its end for anchoring, and the other leg holds a drawing tool, such as a pencil, a short length of just pencil lead or sometimes a

8. Hallade method - Wikipedia

   en.wikipedia.org/wiki/Hallade_method

   The Hallade survey is a survey method that uses the same principle to measure the versines along an existing curve. Based on the versine values, the radius of that circular curved track can be approximated to: [4] This method can be done manually, and this method is still used in the UK.

9. List of measuring instruments - Wikipedia

   en.wikipedia.org/wiki/List_of_measuring_instruments

   A measuring cup, a common instrument used to measure volume. Buoyant weight (solids) Eudiometer, pneumatic trough (gases) Flow measurement devices (liquids) Graduated cylinder (liquids) Measuring cup (grained solids, liquids) Overflow trough (solids) Pipette (liquids) If the mass density of a solid is known, weighing allows to calculate the volume.