A dimensional lumber product and method for marking them. The lumber is marked on a side at regular intervals. The marks may be made with laser, paint, or mechanical force. The marks enable a builder to make accurate cuts using the existing marks, without needing to measure and manually mark the lumber.

A dimensional lumber product and method for marking them. The lumber is marked on a side at regular intervals. The marks may be made with laser, paint, or mechanical force. The marks enable a builder to make accurate cuts using the existing marks, without needing to measure and manually mark the lumber.

A case includes a first housing portion, a second housing portion, a first auxiliary structure, and a second auxiliary structure. The second housing portion is movably coupled to the first housing portion and cooperates with the first housing portion to define a storage space. The first auxiliary structure is disposed on one of the first housing portion and the second housing portion. The second auxiliary structure is disposed on one of the first housing portion and the second housing portion. The first auxiliary structure is a foot disposed on and extending from an exterior surface of the first housing portion. The foot is configured to abut a workpiece to orient the workpiece in at least one preset angle relative to the first housing portion. The second auxiliary structure is a recess.

A case includes a first housing portion, a second housing portion, a first auxiliary structure, and a second auxiliary structure. The second housing portion is movably coupled to the first housing portion and cooperates with the first housing portion to define a storage space. The first auxiliary structure is disposed on one of the first housing portion and the second housing portion. The second auxiliary structure is disposed on one of the first housing portion and the second housing portion. The first auxiliary structure is a foot disposed on and extending from an exterior surface of the first housing portion. The foot is configured to abut a workpiece to orient the workpiece in at least one preset angle relative to the first housing portion. The second auxiliary structure is a recess.

A method for rapidly measuring roller pass major semi-axis of three-roller reducing mill, the method comprising the following steps: selecting a corresponding value of the average diameter of an elliptical pass, a value of a first major semi-axis and a value of a minor semi-axis from a three-roller pass data table according to a rack station number of a special numerical control lathe; calculating a value of a first line segment according to an elliptic equation, the obtained value of the first major semi-axis, and the obtained value of the minor semi-axis; calculating a value of a second major semi-axis according to the right-angle triangle theorem and the value of the first line segment; measuring a first size value by attaching three claws of a three-claw internal micrometer to three roller gaps; or attaching one end of inner calipers to any roller gap, and attaching the other end to the bottom of a roller arc opposite the roller gap to obtain a second size value. The roller pass major semi-axis of the three-roller is reducing mill is measured, and the outer diameter precision and the surface quality of a steel pipe are improved.

A method for rapidly measuring roller pass major semi-axis of three-roller reducing mill, the method comprising the following steps: selecting a corresponding value of the average diameter of an elliptical pass, a value of a first major semi-axis and a value of a minor semi-axis from a three-roller pass data table according to a rack station number of a special numerical control lathe; calculating a value of a first line segment according to an elliptic equation, the obtained value of the first major semi-axis, and the obtained value of the minor semi-axis; calculating a value of a second major semi-axis according to the right-angle triangle theorem and the value of the first line segment; measuring a first size value by attaching three claws of a three-claw internal micrometer to three roller gaps; or attaching one end of inner calipers to any roller gap, and attaching the other end to the bottom of a roller arc opposite the roller gap to obtain a second size value. The roller pass major semi-axis of the three-roller is reducing mill is measured, and the outer diameter precision and the surface quality of a steel pipe are improved.

Provided are a device for measuring the amount of snowfall and a method of controlling the same, the device including a bottom plate, a graduated ruler extending upward from the bottom plate, an image capturing unit configured to capture an image of the graduated ruler and an upper portion of snow deposited on the bottom plate by using an image capturing device, a measurement unit configured to measure the amount of snowfall based on information on the captured image, and a movement unit configured to move the device for measuring the amount of snowfall so that a position of the bottom plate moves from a first position to a second position.

Provided are a device for measuring the amount of snowfall and a method of controlling the same, the device including a bottom plate, a graduated ruler extending upward from the bottom plate, an image capturing unit configured to capture an image of the graduated ruler and an upper portion of snow deposited on the bottom plate by using an image capturing device, a measurement unit configured to measure the amount of snowfall based on information on the captured image, and a movement unit configured to move the device for measuring the amount of snowfall so that a position of the bottom plate moves from a first position to a second position.

A skein measuring and dispensing tool including an oblongated base having a substantially centrally positioned axle channel; left and right travel slots within the oblongated base, the left and right travel slots respectively extending leftwardly and rightwardly from the axle channel; left and right spindles slidably mounted upon the oblongated base, the left and right spindles being adapted for respective movement along the left and right travel slots; left and right series of graduations, the left series' graduations being arrayed leftwardly from the axle channel and the right series' being arrayed rightwardly from the axle channel; and left and right pointers respectively connected to the left and right spindles, the pointers being positioned for, upon the movements of the left and right spindles along the left and right travel slots, successively aligning with graduations among the left and right series of graduations.

A skein measuring and dispensing tool including an oblongated base having a substantially centrally positioned axle channel; left and right travel slots within the oblongated base, the left and right travel slots respectively extending leftwardly and rightwardly from the axle channel; left and right spindles slidably mounted upon the oblongated base, the left and right spindles being adapted for respective movement along the left and right travel slots; left and right series of graduations, the left series' graduations being arrayed leftwardly from the axle channel and the right series' being arrayed rightwardly from the axle channel; and left and right pointers respectively connected to the left and right spindles, the pointers being positioned for, upon the movements of the left and right spindles along the left and right travel slots, successively aligning with graduations among the left and right series of graduations.