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The grades and metrics of edwards products are strictly in accordance with the NHLA (American Hardwood Board Association) rules.
The NHLA grading rules used in the US hardwood industry are based on imperial (inch and foot) units. But most export markets are more familiar with the metric system. In addition, the grading rules do not specify the width and length of the board.
â–¡ Standard thickness of rough sawn timber
The standard thickness of rough sawn timber is expressed in quarters of an inch. For example: 1 inch = 4/4 inch. Most American hardwood sheet saws are between 1 inch and 2 inches thick, although there are other thickness specifications, but the number is limited. The following are standard thickness specifications and corresponding metric sizes:
3/4 | (3/4" = 19.0mm) | 6/4 | (1 1/2" = 38.1mm) |
4/4 | (1" = 25.4mm) | 8/4 | (2" = 50.8mm) |
5/4 | (1 1/4" = 31.8mm) | 10/4 | (2" = 63.5mm) |
â–¡ Board ruler
The ruler (BF) is the basic unit for measuring hardwood boards.
One ruler unit is 1 foot (length) x 1 foot (width) x 1 inch (thickness). (1 foot = 0.305 meters, 1 inch = 25.4 mm)
The formula for measuring the plate ruler is: [width (inches) x length (feet) x thickness (inches)] ÷ 12
The proportion of the net facet in each grade is measured in this 12-digit unit of measure.
â–¡ Thousand feet
As the name implies, it is a thousand-foot ruler (BF), the English abbreviation is MBF, 1MBF=2.36M3
High Frequency Ranging Sensor Module
A high frequency ranging sensor module is a device that uses high-frequency signals to measure the distance between the sensor and an object. It typically consists of a transmitter and a receiver, which emit and receive high-frequency signals, respectively.
The module works by sending out a high-frequency signal, such as ultrasonic or radar waves, and measuring the time it takes for the signal to bounce back after hitting an object. By calculating the time of flight, the module can determine the distance between the sensor and the object.
High-frequency ranging sensor modules are commonly used in various applications, such as robotics, industrial automation, and automotive systems. They provide accurate distance measurements and can be used for obstacle detection, object tracking, or proximity sensing.
High-frequency laser distance sensors have a high measurement frequency and can provide real-time distance data, suitable for scenarios requiring quick responses, such as dynamic obstacle avoidance, autonomous driving, and robot navigation. These sensors ensure that the system can promptly perceive environmental changes and react quickly, ensuring safe and reliable operation.
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