Entering lengths in .5mm but a

luke83 · 发表于 2022-7-8 10:44:14

Hi im trying to draw a plan of a job for work , but everytime i draw a line with a .5 length (eg 523.5 length) it gets round up, how can i get it to draw in half a mm???

Cad64 · 发表于 2022-7-8 11:06:24

Type UNITS at the command line and set the "Precision" appropriately.

New2CADmike · 发表于 2022-7-8 11:14:41

Cad64,When you draw that line and use the command line by typing in 523.5 for the length,will it truly make the length 523.5 or will Acad round up the length also to say 524, when you have the precision set at 0 in the units setup?..is the rounding up done in the dimentioning only..because if the line is 524 truly in length,that could really screw up machining in cnc and the like..

LukeCAD · 发表于 2022-7-8 11:25:01

if the rounding is set to zero the line is always drawn to what you type in (up to 14 dp i think) but you can only see to the number you have set in units, so if you draw a line 1.0005550 in length, and you have your unite set to 3dp , when you list it you will see 1.001, however, if you went in to your dims and set the Linear dims precision to 7dp then dimensioned the line you would see 1.0005550 as a length.

Coosbaylumber · 发表于 2022-7-8 11:32:56

Oh, I remember this one. Dates back to when a couple of fellows from Autodesk came in during the early 1980's and visited us, to watch the plotter and digitizer we had working run.

But, we were developing some software at the time, and one of our engineers came in and asked the question. Which way at exactly 1/2 then? One of the future Autodesk visitors said UP. I said towards the even, as then you can cut the number in half, and usually get an interger. Their method was go up, and that is how the code got written circa 1980's. It looks to be one way only, and as of today, is still that way.

This system later on aided them in that you could re-set UNITS, take a fractional number divide by two and get.....

Wm.

stevsmith · 发表于 2022-7-8 11:52:15

type DIMRND and adjust to 0 (zero)

Or

Format>
Dimensiion style>
Modify>
Primary Units>
Round Off = 0.0

Make sure if you adjust the dimension style to save it to your dwt file or you will have o do this step every time

[综合讨论] Entering lengths in .5mm but a

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