# DIMDEC System Variable [GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) → [System Variables](Help%20System/GSTARCAD/2027/System%20Variables/(System%20Variables).md) **Function Description:** The DIMDEC system variable is used to set the number of decimal places in main units for dimensions. | | | | --- | --- | | Type | Integer | | Saved in | Drawing | | Initial value | 4 (Imperial) or 2 (Metric) | The precious is based on selected units or angle formats. The specified value will be applied on angular dimension when the DIMDEC system variable set to be -1. --- [Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/systemVariables/DIMDEC.html) · © Gstarsoft Co., Ltd.