Compute the object scale factor between any two drawing scales for any paper size. Supports ISO A-series, ANSI/Arch, all imperial fractions, and all common metric ratios. Source-derived from EEP_v6_3_2.lsp standard scale tables.
SCALE command with the resulting factor on the selected objects, or set the DIMSCALE / LTSCALE / VPSCALE system variables. For annotative objects, add the target scale via OBJECTSCALE instead — equivalent to c:ASC in EEP_v6_3_2.lsp.
EEP_v6_3_2.lsp · *EEP-LT-TEXT-SIZE-DB* (lines 2225–2273).| Scale | General | Medium | Large | Use |
|---|---|---|---|---|
| Metric 1:25 | 60 mm | 90 mm | 135 mm | Equipment elevations, large details |
| Metric 1:50 | 120 mm | 180 mm | 270 mm | Plans, sections, room-level details |
| Metric 1:75 | 180 mm | 270 mm | 405 mm | Medium plans |
| Metric 1:100 | 240 mm | 360 mm | 540 mm | Floor plans (most common) |
| Metric 1:125 | 300 mm | 450 mm | 675 mm | Site / context plans |
| Metric 1:150 | 360 mm | 540 mm | 810 mm | Site plans |
| Metric 1:200 | 480 mm | 720 mm | 1080 mm | Master / overall plans |
| Imperial 1/2"=1'-0" | 2.25 in (57 mm) | 3.75 in (95 mm) | 6.00 in (152 mm) | Large-scale details |
| Imperial 1/4"=1'-0" | 4.50 in (114 mm) | 7.50 in (191 mm) | 12.0 in (305 mm) | Floor plans (most common imperial) |
| Imperial 1/8"=1'-0" | 9.00 in (229 mm) | 15.0 in (381 mm) | 24.0 in (610 mm) | Small-scale plans |
| Imperial 1/16"=1'-0" | 18.0 in (457 mm) | 30.0 in (762 mm) | 48.0 in (1219 mm) | Site plans |
| Paper Space | 2.4 mm (3/32 in) | 3.6 mm (1/8 in) | 5.4 mm (1/4 in) | Printed nominal |