Why choose N.E.R. over anyone else for your automotive machine shop needs? Nashua Engine Rebuilders has been in business since 1936 for a reason. Attention to detail and precision work at a great price. N.E.R consists of a father and son team, Mark and Jack Thomas, and our Master Machinist Jesse Maynard. Both Mark and Jesse are two highly skilled ASE certified automotive machinists with over 50 years of experience between them. Mark and Jesse have seen it all, and are not afraid of any project; big or small.