Currently the inference of point either midpoint, end point., etc., without any distance value input. is it possible something can be inputted like, 750 mm from the end point or a midpoint (something like object Tracking in autocad with input the values)


You have to get rid of some ‘CAD’ habits, the TS-IS™ (Trimble SketchUp Inference System) is always on and cannot be set to specific vertices.
There are ways, though, some prefer adding guidelines and points, others move the drawing axis a certain distance and/or rotate(rightclick on one of the axis and choose ‘Move’)
Notice how you can define you’re points of interest by hoovering over the entity (Face , Edge or vertice)

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Yes, first click the endpoint or midpoint to start drawing the new edge, then move the mouse in the direction you want the new edge to run, then just release the mouse and type 750mm and press the ENTER key.
[Do not click in the Measurements (Value Control Box) just type the dimension and press ENTER.]


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Possible ambiguity to the question - Is the task to:
a. start a line from an end point and then draw 750mm in some other direction, or
b. start a line 750 mm in from the endpoint and then head off in another direction?

a. is natural in SU, b. isn’t a simple, one click task.

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I think the OP meant option ‘b’. You would have to consider to draw a new object which starts 750 mm from another point.
This can be achieved by placing the axis on that point, and then move it.

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For “b” type scenarios I always say to get S4U’s LineTool extension.

It’s really weird that SketchUp’s native Linetool is so “plain” and doesn’t have functionality like S4U’s extension.

Or use a to achieve b.
As in draw an edge as @DanRathbun has described and that creates the Endpoint needed.

Thanks guys,
I had meant the option b, I.e starting a new line 750 mm away from the end point by use of inferencing without guides or axis.

While Sketchup can place an endpoint according to keyboard input it needs a mouse click to activate the start point. So as I mentioned above, I often use an edge to create an endpoint rather than use a guide.
A little gif showing what I mean, by drawing an edge along the edge to the length you want you create an inference point to start your new edge, or attach things etc,

Thanks Box, but what i am asking is a new line to be drawn from 750mm away from an end point or mid point of already drawn line…

Well draw an edge Away in the direction you want to give you an endpoint to start from, then delete it.
Or move copy the edge 750 away from the original.

susketch may be thinking of something like a preset or prompt that snaps to a location on an edge as soon as you hover near one end. CAD has such things, but this is pretty straightforward as a one off solution-- you must give a direction and and distance to the new point and you end up with a point at the intersection of the new line anyway.

If it is a repetitive practice you can create a component that does it in some scenarios.

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To me it seems that the only difference between your request and @Box’s (and SketchUp’s) solution is that you have to delete on (on dimensional), two (to dimensional) or three (3 dimensiona) edges or constructionpoints afterwards.

It is a pity that you cannot assign a shortcut for ‘Move Axes’ , otherwise, control over the native drawing axes is much quicker:


It all depends. There are many ways leading to Einhoven Rome.

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I think the responses show different interpretations. A file or illustration of what is wanted and how it would be used would help.

You can perform the exact same operation with the tape measure tool instead of line tool and get guide points, which don’t print.

This won’t make a guide point from a midpoint however.

You can combine this with @MikeWayzovski’s suggestion by moving the axes, and then with absolute coordinate entry get all three dimensions in one guide point placement.

I did mention construction points. Their tails however are “worthless” for inferencing.
Delete (all) guides however is fast, one click on a dedicated shortcut key.

Oh, right, I missed that. My mistake. I find I don’t actually use construction points that much. My actual workflow most often is to 1) draw the thing and then 2) move it by the offset rather than 1) find the offset starting point and then 2) draw the thing. The catch is if it’s all loose geometry, it will get glued, so you have to think about either grouping something, or moving a copy and deleting the original.