AcadCalcStair 4.0 could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. AcadCalcStair is categorized as Photo & Graphics Tools. The most popular versions of the tool are 4.0 and 1.0.
The most frequent installation filenames for the program include: AcadCalcStair2000.exe, AcadCalcStair2004.exe and calc.exe etc. This program is an intellectual property of NYacad. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
AcadCalcStair: the program for calculations in AutoCAD (any formats of numbers) and Stair & Rail drafting. With this program you can do mathematical operations; calculations of triangles, slopes and stairs. Results of calculations can be used directly for performing AutoCAD commands: move, copy and others.
You may want to check out more software, such as Plate 'n' Sheet Development Pro., CAD To DMC or TachyCAD, which might be related to AcadCalcStair.