Micrometer 3D model is available on CGTrader for $14. Original author: ecati. Specs: 2846 polys, 8206 verts.
SKP (Sketchup, filesize: 339 KB), OBJ (OBJ, filesize: 255 KB), FBX (Autodesk FBX, filesize: 391 KB), 3DS (3D Studio, filesize: 158 KB), DAE (Collada, filesize: 190 KB)