JPH0430481Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a leveling rod used for photographically recording the values of objects to be measured underwater.

(Problems to be solved by conventional techniques and ideas) Conventional leveling rods are intended for measuring objects on the ground, and their reference point is the ground, so zero point 1 is placed at the bottom and marked in order upwards. For ease of reading, the top of the numeral 2 is usually directed upwards, that is, toward the main body on the opposite side of the zero point 1.

However, when measuring underwater objects, it is often the case that the reference point is located at the top end, for example, how many meters below the sea surface, and measurements are taken from above to below.In such cases, if a conventional leveling rod is used, as shown in Figure 3. As shown in Figure 3, the numbers are reversed and not only difficult to read, but if a portion (for example, the enlarged part in Figure 3) is photographed, there is a high risk of misreading due to the illusion of the vertical relationship of the object to be measured. Furthermore, when taking photographs underwater using a flash, if the base 4 is white and the scale 5 or number 2 is marked in black or red, as in the past, the photograph will be unclear due to the strong reflection of the base 4. There are many problems such as.

In order to solve these problems, the present invention provides a leveling rod for photographic recording of objects to be measured underwater, which has not been seen before.

The construction site inspection scale, which divides the main scale into the upper and lower halves and displays a reverse scale only in the upper half, was developed in 1975.
-145275, this test measure has a sliding groove extending from the upper end to the lower end on the front side of the main measure, and a guide with the same length as the main measure is placed in the sliding groove at the upper end. In addition to fitting the sliding scale with a piece, the lower half of the main scale is equipped with a regular scale plate to hold the sliding scale, and the upper half of the main scale displays a reverse scale. For example, when testing the thickness of pavement members at a road construction site, after cutting out a test piece at a suitable location, place one side of the lower end of the test rod on the edge of the cut-out hole, and place the test piece on the edge of the cutout hole. It is used for special purposes and uses, such as pressing down into a hole and grounding its lower end, and reading the depth of the hole by the reverse scale indicated by the indicator piece. It was impossible to use it to measure objects.

(Means for solving the problem) In the present invention, a zero point is arranged at the upper end, and numbers on the scale are marked downward in order with the head facing toward the zero point, and the base of the main body of the leveling rod and the scale and numbers are marked downward. The present invention attempts to solve these problems by providing a leveling rod used for underwater photographic recording that is colored in a matte state with low brightness and saturation.

(Example) Fig. 1 is a partial front view showing an example of the present invention.
Fig. 2 is a diagram showing its usage state, where the zero point 1 as a reference point is placed at the upper end of the leveling rod main body 3 with the base 4 colored green, and the scale 5 is colored red or orange (in the drawing) downwards. The number 2 is marked at a predetermined position in red or orange (the figure shows a dot pattern) so that the head of the number 2 faces toward the zero point 1. Furthermore, the same effect can be obtained by using other color combinations such as the base 4 being orange and the scale 5 and the number 2 being black.

Furthermore, even if only a vertically symmetrical number, such as 8, is photographed, the arrows attached to the scale 5 make it possible to decipher the vertical positional relationship without any illusion. It is possible.

(Operations and Effects of the Invention) The present invention has a zero point, or reference point, at the top end, and numbers on the scale are marked downward in order with the head pointing toward the zero point, so when used underwater. However, as shown in Figure 2, the numbers are arranged in the order of directions, making it easier to read and eliminating the possibility of misunderstanding the vertical relationship of the object to be measured even if a portion of it is photographed. The scale and numbers are colored with low brightness and saturation and are matte, so even when taking photos using flash, it is possible to obtain clear images with little reflection. The present invention has the effect of fully solving the above-mentioned problems.

[Brief explanation of the drawing]

FIGS. 1 and 2 show an embodiment of the present invention, with FIG. 1 being a partial front view of the leveling rod main body, and FIG. 2 being a usage state diagram. FIG. 3 is a diagram showing the state of measurement of underwater objects using a conventional leveling rod. 1... Zero point, 2... Number, 3... Leveling rod body, 4
...ground, 5...scale.

Claims (1)

[Scope of utility model registration request] The zero point is arranged at the top end, and the numbers on the scale are marked downward with the head pointing toward the zero point, and the base of the main body of the leveling staff, the scale, and the numbers have low brightness and saturation and are matte colors. A leveling rod used for underwater photographic recording that is colored.