Swiss Machining
Produces small, complex components with extremely tight tolerances using sliding headstock technology, ideal for miniature electrical contact parts and precision sealing hardware requiring multi-operation accuracy.
M.A.R.'s Engineering delivers precision-manufactured components for demanding applications, combining tight-tolerance machining, in-house finishing, and decades of production expertise. From prototypes to high-volume runs, customers get dependable quality, streamlined sourcing, and a single manufacturing partner focused on consistency, traceability, and performance-critical parts.
Precision manufacturing support for complex, tight-tolerance components from prototype development through repeatable production runs.
Produces small, complex components with extremely tight tolerances using sliding headstock technology, ideal for miniature electrical contact parts and precision sealing hardware requiring multi-operation accuracy.
Cuts conductive materials with exceptional repeatability for intricate profiles, sharp internal corners, and detailed features often needed in custom contacts, tooling, and specialty component geometries.
Supports cylindrical precision parts in prototype and production quantities, delivering consistent dimensional relationships for custom contact bodies, sleeves, fittings, and other engineered components.
Achieves super-fine finishes and ultra-tight diameter tolerances for pins, shafts, and cylindrical parts where fit, wear resistance, and smooth performance are critical.
Manufactures miniature precision components when standard machining cannot meet required scale, geometry, or tolerance demands, supporting zero-defect applications across advanced industries.
Provides in-house plating, polishing, deburring, and light assembly to improve corrosion resistance, conductivity, surface quality, and readiness for final installation.
Custom-engineered seals, springs, and electrical contacts demand more than basic machining—they require repeatable accuracy, material control, and dependable finishing. M.A.R.'s Engineering combines Swiss machining, CNC turning, EDM, grinding, and in-house secondary services to help customers consolidate sourcing, reduce lead times, and receive production-ready components backed by traceable quality systems and decades of manufacturing experience.
Supporting demanding industries with repeatable quality, tight tolerances, and efficient production from prototype through volume manufacturing.
"We’ve had an excellent experience working with Mars. Their screw machining capabilities are top‑notch, and the precision of the parts they deliver is consistently impressive. The team is knowledgeable, responsive, and easy to work with, and their experience really shows in the results."
"We’ve had an excellent experience working with Mars. Their screw machining capabilities are top‑notch, and the precision of the parts they deliver is consistently impressive. The team is knowledgeable, responsive, and easy to work with, and their experience really shows in the results."
"We’ve had an excellent experience working with Mars. Their screw machining capabilities are top‑notch, and the precision of the parts they deliver is consistently impressive. The team is knowledgeable, responsive, and easy to work with, and their experience really shows in the results."
Customers rely on M.A.R.'s Engineering for precision, responsiveness, and integrated manufacturing support.
Family-owned since 1964, with decades of precision machining knowledge across complex component applications.
In-house machining, finishing, plating, and light assembly reduce vendor handoffs and shorten production timelines.
ISO-compliant systems and traceable processes support consistent output for prototype and production requirements.
Single-spindle, multi-spindle, CNC, EDM, and grinding capabilities support both custom and high-volume work.
Built on decades of family-led manufacturing expertise.
M.A.R.'s Engineering Company Inc. was founded in 1964 by Manuel and Reine Ambrosio and has remained a family-run business ever since. Over the decades, the company expanded its capabilities through new equipment, a second operations department, and continued investment in advanced machining technology. The business added multi-spindle capacity in 1982 and later expanded further under Manny Blaine Ambrosio's leadership, including the addition of a CNC department and in-house Wire EDM capability. Today, M.A.R.'s Engineering continues to serve customers that need close-tolerance parts, dependable turnaround, and a single-source manufacturing partner for prototype, production, finishing, and assembly support.
M.A.R.'s Engineering manufactures precision components for demanding applications, including miniature parts, electrical contact-related components, threaded parts, fittings, bushings, sleeves, shafts, pins, and other close-tolerance machined products. The shop supports both prototype and production work using Swiss machining, CNC turning, EDM, grinding, and in-house finishing to meet dimensional, surface, and functional requirements.
Talk with our team about specs, tolerances, and production options.
Supports documented quality and traceability.
Demonstrates disciplined inspection standards.
Long-standing manufacturing reliability and trust.
Share your drawings, quantities, materials, and tolerance requirements, and our team will review the best manufacturing approach for your project.
For immediate assistance, feel free to give us a direct call at +1 510-483-0541. You can also send us a quick email at info@marseng.com.
For immediate assistance, feel free to give us a direct call at +1 510-483-0541. You can also send us a quick email at info@marseng.com.