You can still modify geometry without dimensioning it, though care to explain a little further why you don't want or need to dimension?
Omar Tan
Malaysia
Mac Pro (Late 2013) | 3.7 GHz Quad-Core Intel Xeon E5 | 12GB 1.8 GHz DDR3 ECC | Dual 2GB AMD FirePro D300
MacBook Pro 15" (Late 2016) | 2.6 GHz Quad-Core Intel Core i7 | 16GB 2.1 GHz LPDDR3 | 4GB AMD RadeonPro 460
macOS Sierra, Windows 10