From prototype runs to high-volume production, M.A.R.'s Engineering manufactures precision metal and plastic components for medical, industrial, and automotive applications. With nearly 60 years of machining experience, integrated in-house processes, and tight-tolerance capabilities, the team delivers consistent quality, traceability, and faster turnaround for complex parts that demand dependable performance.
Precision machining and finishing services for complex components, prototypes, and production runs across regulated and high-performance industries.
Produces miniature, complex components with ultra-tight tolerances using sliding headstock technology. Ideal for medical, electronics, and high-precision industrial parts requiring excellent repeatability and multi-operation efficiency.
Delivers accurate cylindrical parts such as shafts, bushings, fittings, and threaded components. Supports prototype through production volumes with live tooling and sub-spindle capabilities for complex feature relationships.
Cuts conductive materials with sharp internal corners, intricate outlines, and tight tolerances. Well suited for hardened alloys, detailed features, and custom tooling that improves downstream production efficiency.
Supports short, medium, and high-volume runs through single-spindle and multi-spindle equipment. Efficiently produces precision turned parts with multiple operations completed in one setup.
Achieves fine surface finishes and diameter tolerances as close as 0.0001 inches. Ideal for shafts, pins, tubing, and cylindrical parts requiring smooth, consistent outer dimensions.
Provides plating, polishing, deburring, coating, and light assembly in-house. Helps streamline production, reduce vendor handoffs, and deliver ready-to-install components with consistent surface performance.
M.A.R.'s Engineering helps customers source precision metal and plastic components from one experienced manufacturing partner. With Swiss machining, CNC turning, screw machining, EDM, grinding, and finishing under one roof, the company reduces lead times, improves quality control, and supports everything from prototypes to high-volume production. That means fewer handoffs, better traceability, and dependable results for critical medical, industrial, and automotive applications.
See why customers rely on consistent quality, precision, and responsive production support.
"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 choose M.A.R.'s Engineering for precision, responsiveness, and complete in-house manufacturing support.
Nearly 60 years of family-owned machining experience across demanding precision manufacturing applications.
Integrated machining, finishing, and light assembly reduce delays, handoffs, and multi-vendor coordination.
Capabilities reach ±0.0001 inches for components requiring repeatable accuracy and dimensional control.
ISO compliant systems and documented processes support consistency, inspection confidence, and production traceability.
Experienced manufacturing leadership with deep machining roots.
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. Built on precision screw machining and close-tolerance manufacturing, the company expanded over the decades through new equipment, added departments, and long-term customer relationships earned through referrals and consistent performance. A major milestone came with the addition of multi-spindle capabilities, followed by continued investment under Manny Blaine Ambrosio, who began managing the business in 1990 and purchased it in 1996. Today, M.A.R.'s Engineering continues to serve medical, industrial, and automotive customers with integrated in-house machining, EDM, finishing, and assembly capabilities designed to improve quality control, shorten lead times, and simplify sourcing.
M.A.R.'s Engineering serves a wide range of industries, including medical, automotive, aerospace, electronics, food processing, transportation, heating and cooling, and industrial equipment. The company is especially well suited for applications that require tight tolerances, repeatable quality, specialty materials, and dependable production support from prototype through full-scale manufacturing.
Talk with our team about materials, tolerances, and production needs.
Supports documented quality and traceability
Quality compliance for inspection standards
Long-standing precision manufacturing experience
Share your drawings, quantities, materials, and tolerance requirements. Our team will review your project and help identify the right in-house manufacturing approach.
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.