Splitting tar and tgz files

Is there a way to split a tar or gzipped tar file into several files, to be rejoined later on another hard drive? For example, given file.tgz which is 10 MB in size, is there a way I could divide it into 10 files, each of which fits on a 1.44 MB diskette (called file-1 ...file-10), to be rejoined later into the original 10 MB file? Thanks dj tuchler