Work tools that provide precision and accuracy in measurement are essential elements of any trade profession or artisanship because they provide a sure way of observing the world around us translating them into measurable physical quantities for objects and events.
There are many measuring tools for different purposes, but we will mention a handful of them.
Laser Distance Meter
Laser tape measures are used to calculate lengths, widths, and heights of spaces where construction or an action is to be performed. These are alternatives to traditional metal tape measures. They are generally considered accurate to within an eighth of an inch (3 millimetres) when measuring distances of up to 300 feet (91.5 meters).
The laser distance meter is used for accurately determining the distance of an object or span without contact by way of a laser. The basic measuring principle is based on measuring the transit time of laser pulses between the laser distance meter and the object to be measured.
Most laser distance measuring tools offer easy operation and some advanced models offer many more features and functions depending on the purpose intended. It automatically measures to where the laser is pointed and in some models, selection on whether the length of the tool is included in the measurement or not. This is a handy feature in situations where it is advantageous to have the rear of the unit against a wall or post.
Laser distance measuring tools can manage basic calculations like add\ition, subtraction, area, and volume. They can also store previous measurements, depending on the model, into internal memory. Some laser measuring tools will track minimum and maximum measurements. You can automatically transfer between different units of measure.
These are one of the fastest and most accurate ways to collect measurements, especially if you have multiple measurements to take during the same job or day.
Features of Laser Distance Measuring Tools
Single person use (one can easily take measurements alone)
Records measurements using the unit memory feature
More accurate readings
Safer as a person may not need to walk out on a wall or ledge or ladder
Quicker measuring implying less time on the job site
Covers long distance measurement
In-built basic calculations
Illuminated to work
Versatile. Work in different units such as metric or English
Compact and less bulky than carrying a large measuring tape
Types of Laser Distance Measuring
- Line Laser: - This sends the laser out through a cylindrical or Powell lens.
- Cross Line Laser: - This uses a prism to deflect the laser in roughly 180 degrees vertically, horizontally, or both. That creates a bright, steady beam that is very easy to see
- Rotation Laser: - This sends out its laser beam through a single point diode. This gives it much greater range
- Surface Laser: - This is used to check if a floor is level or flat by calculating points of deviation. It allows for quick scanning of the entire floor/surface using a remote control
- Tile Laser: - This laser accurately projects 90-degree lines for squaring tile, flooring layout and walls
Laser receivers and line lasers are used in tandem when working outside because it ensures efficient reading or the line laser. Laser receivers are compatible with line or rotating lasers depending on the pulse, rotation and frequency of the beam.
Features of Laser Receiver
- Basic rotating receiver with LED display: Have three LED lights indicating; above level, below level and on level. It is handheld.
Rotating receiver with dual LCD displays. This handheld receiver has displays in front and at the rear to avoid interruption of beam when reading signals.
Millimetre Display Receivers. These receivers generally have a greater reception window and indicate how close to level the laser is. It is also handheld.
Machine Mounted Receivers. These are mounted on an earth moving machine directly in order to see the depth of a cut directly compared to the level/grade set on a rotating laser level. These types of receivers are often purchased as an accessory and most machine receivers only operate on red beam rotating lasers.
The standard optical level (also referred to as a builder’s level) features a telescope that enables a surveyor or builder to make an actual measurement. This is a common instrument used primarily for surveying, the tool can generally be seen in use in fields or on the sides of roads.
Types of Optical Level
Standard Optical Level
Transit Level/ Builder’s Level: - This can be turned on its side and used to measure vertical angles and distances between parallel objects. It can also be used to establish a perfect level line.
Digital Theodolite level: - Digital Theodolite Level features a telescope with an internal optical magnifying system that is mounted on a base and is not affected by wind or other weather factors. It also has a readout screen that is used to clearly display horizontal and vertical angles which also results in fewer repeat readings.
An inclinometer is a sensor used to measure the magnitude of the inclination angle or deformation of any structure. They are used to measure the slope gradient during activities like tunnelling, excavation and dewatering. Such activities affect the ground that supports the structure.
The inclinometer installation procedure depends on the application field. It can be installed vertically to a monitor, to the slope being measured or any movement, and in the shoring wall and embankment.
These are handheld devices used to locate the beam of wood, metal or wiring running through a drywall, in order to find a firm support to screw or nail things.
Types of Stud Finders/Detectors
Magnetic Stud Detector: - Magnetic stud detectors use magnets to locate metal in the walling material because the magnet is attracted to the metal. The attraction grows stronger as the magnet gets closer to the metal in the walling. The strongest attraction point, if due to a metal fastener in the wall, should indicate the location of a stud.
Electric Stud Detector: - Electronic stud finders rely on sensors that detect changes in the dielectric constant of the wall. The dielectric constant changes when the sensor is over a stud. The lower reading indicates the presence of a stud in the wall. Internal capacitor stud finders can also come with other features that locate metal and live AC voltage. Electronic stud finders currently come in three types: Edge Finders, Centre Finders, and Instant Finders. Some electric stud finders can even detect the type of material based on density and using a combination of scanning techniques. Some of the more expensive stud finders can detect hidden metal pipes, electrical wires, and screws/nails while others can scan up to 3-4 inches deep.
For more purposeful information, sales and services of all kinds of test equipment and measuring tools contact GZ industrial Supplies