SIP (SOCIETE GENEVOISE). MP-4B, MP-5B and MP-6 jig borers. A very interesting detailed and rare and early Sales & Technical Specification Catalogue (probably 1929) that describes what a jig borer is and what it can do. 28 pages.
SIP (Society Genevoise) Jig Borer MP-4B, MP-5B and MP-5G: Detailed Technical Manual, Maintenance, Use of Accessories and a copy of the detailed Sales and Technicaliled Catalogue for the MP-4B, MP-5B and MP-6