2020年1月20日 · It is the most useful for layout, for measuring rough dimension lumber in a yard, and for general carpentry where you want to measure inside dimensions.

A ruler, sometimes called a rule, scale or a line gauge or metre/meter stick, is an instrument used to make length measurements, whereby a length is read from a series of markings called "rules" along an edge of the device. [1]

[摘 要] 根据数字水准仪倒尺测量的特点，研制出了一种可折卸倒悬式铟钢尺挂件，在确保测量精度的同时，有效提升了 测站点的相对高差，并减少了设站次数。 [关键词] 倒尺测量； 铟钢尺； 挂件； 数字水准仪； 监测测量.

When the inverted ruler installation device is used for observing the pier top elevation of a high pier, the inverted ruler installation device is fixed on the top surface of the high pier, and...

Remember to save the setting, so you can use the ruler directly next time. You can use anything for comparison as long as you know its size. This vertical ruler, the left haf is a centimeter ruler, the right half is an inch ruler. Clicking on the ruler will show a red line.

2020年11月15日 · In order to establish two sets of relatively independent elevation system and adopt the method of setting up independent station to measure the inverted ruler, the feasibility of this method is verified, and the sources of measurement error and control measures are analyzed.

2021年2月1日 · In order to establish two sets of relatively independent elevation system and adopt the method of setting up independent station to measure the inverted ruler, the feasibility of this method is...

B is the point to be inverted. 1. Line through AB, intersecting circle at C,D. 2. Point E is B reflected through A. 3. Ray AG perpendicular to CD. 4. Ray EG. 5. Ray GJ perpendicular to EG. 6. Inverted point K.

2020年4月10日 · The feasibility of the method is verified by setting up two sets of independent elevation system and adopting the method of setting up a single station to measure the inverted ruler, and then the...

2023年5月29日 · A ruler that can be used as a toy, to hang on the wall next to the other toy 3d printed tools or used as a real ruler. This is a remix of the original model. 1. Added a hole for hanging. 2. Made the model thicker for sturdiness and better usability. (From 1mm to 3mm) 3. Made the numbers and lines slightly more visible.