# Use Precision Tools [GstarCAD 2021](Help%20System/GSTARCAD/2021/Index.md) → [User Guide](Help%20System/GSTARCAD/2021/User%20Guide/(User%20Guide).md) → [Create and Modify Objects](Help%20System/GSTARCAD/2021/User%20Guide/Create%20and%20Modify%20Objects/(Create%20and%20Modify%20Objects).md) With the help of a variety of precision drawing tools, you can produce accurate drawings quickly without tedious calculations. - [Use Coordinates and Coordinate Systems (UCS)](Use%20Precision%20Tools/Coordinate%20and%20Coordinate%20System--53c1c8bb4871.md) To establish workplanes and for convenient coordinate entry, you can use a movable coordinate system and the user coordinate system (UCS). - [Object Snaps](Use%20Precision%20Tools/Object%20Snap--4d0c1b1e16b8.md) You can specify points relative to existing objects such as endpoints of lines or center points of circles, Instead of entering coordinates. - [Polar](Use%20Precision%20Tools/Use%20Polar%20Tracking%20and%20PolarSnap--c77937ac89ea.md) If you use polar tracking, the cursor will move according to the specified angle. - [ORTHO](Use%20Precision%20Tools/Use%20ORTHO%20Mode--e74cbceff17f.md) After opening the ORTHO mode, you can restrict the cursor to move horizontally or vertically. - [Grids](Use%20Precision%20Tools/Set%20and%20Change%20the%20Grid%20and%20Snap%20Space--1b93ecf385cc.md) To enhance drawing speed and efficency, you can display and snap rectangular grids. - [Get Geometric Information](Use%20Precision%20Tools/Get%20Geometric%20Information--09ddb792d195.md) To get information about the objects in your drawing and to do useful calculations, you can use the inquiry and calculation commands. --- ## Other versions with matching text [GstarCAD 2017](../../../2017/User%20Guide/Create%20and%20Modify%20Objects/Use%20Precision%20Tools--4e9089b99296.md) · [GstarCAD 2018](../../../2018/User%20Guide/Create%20and%20Modify%20Objects/Use%20Precision%20Tools--4e9089b99296.md) · [GstarCAD 2019](../../../2019/User%20Guide/Create%20and%20Modify%20Objects/Use%20Precision%20Tools--4e9089b99296.md) · [GstarCAD 2020](../../../2020/User%20Guide/Create%20and%20Modify%20Objects/Use%20Precision%20Tools--4e9089b99296.md)