D.L. Martin strives to achieve the highest levels of customer satisfaction in all products and services we offer through continual improvements in operational excellence. We work closely with our customers to understand their needs and expectations and then commit ourselves to exceed those expectations. Strict ISO 9001 - 2015 system quality practices, and great pride in the resulting product, enables us to succeed. We are dedicated to building long-term customer relationships based on our performance.
Quality Policy:  To provide products that consistently meet or exceed the quality specifications of our customers and our ISO 9001:2015/AS9100 quality system.

Quality Mission:   To deliver the highest quality products on time, every time, at a reasonable price.
Quality Objective:  To ensure compliance to the quality policy with commitment to:
  •  Reducing scrap and rejected material
  •  Improving quality of finished products
  •  Improving achievement of customer commitments
Inspection Processes
D.L. Martin Co. orders go through a quality process performed to Zero Acceptance Number Sampling Plans with AQL of 1.5.
Inspection processes may include the following:
  • Final inspection Data
  • Calibration Data Base
  • Corrective Action
  • Preventive Action
  • First Piece Inspection Data
  • First Article Inspection Reports
  • Receiving Inspection Data
  • In-Process Inspection Data
  • PFMEA’s and full capability studies
  • PPAP’s

Inspection Equipment
D.L. Martin Co. maintains a variety of inspection equipment to meet our customer’s needs to include:
  • Mitutoyo digital dial caliper (up to 40”)
  • .001-1.00 pin gage set
  • Rock of Ages 2’x’3’ Granite Surface Plate
  • Starrett 2’x2’ Granite Surface Plate
  • Brown & Sharpe 22” height indicator
  • Various dial depth gages
  • Parallel bars
  • Mitutoyo grade A gauge block set (5)
  • Various depth micrometers
  • Wilson Rockwell Hardness Tester
  • Bore gages
  • Assortment of master rings, O.D. setting discs, thread plugs, and ring gages
  • Sheffield Measurement 1808-MEA Coordinate Measuring System
  • L.S. Starrett RCS 2828-18 Coordinate Measuring System
  • L.S. Starrett digital hardness tester
  • Faro 3D Measurement
  • Mitutoyo PH-A14 Profile Projector with QM-Data 200
  • Ohaus digital scale
  • Federal surface gages (4)
  • Various intertest gages
  • 6” V-Blocks
  • Various Specialized Micrometers
D.L. Martin's Environmental Policy Statement of Purpose D.L.Martin Co. recognizes its role in protecting the environment. We value the environment of the community in which we operate and recognize its importance to our employees, their families and our continued welfare. Protecting the environment is critical to our operations and the companies long term success. To this end, we endorse these principals to demonstrate our commitment to the environment.


Are both DLM Mercersburg an DLM East Berlin ISO Certified?
What is ISO 9000?
ISO 9000 is defined as a certification showing that a manufacturing or service organization follows the standards from the International Organization for Standardization (ISO) , which call for strong management, product development documentation and quality customer service practices.
What is ISO 14000?
ISO 14000 is a family of standards related to environmental management that exists to help organizations minimize how their operations (processes etc.) negatively affect the environment.
What is lean manufacturing?
Lean manufacturing or lean production, often simply "lean", is a systematic method for the elimination of waste within a manufacturing system.
What is the difference between lean manufacturing and JIT (Just-in-Time) Manufacturing?
Lean manufacturing or lean production, often simply "lean", is a systematic method for the elimination of waste within a manufacturing system.
What is APQP?
APQP is a structured approach to product and process design. This framework is a standardized set of quality requirements that enable suppliers to design a product that satisfies the customer.
What is the goal of APQP?
The primary goal of product quality planning is to facilitate communication and collaboration between engineering activities. APQP ensures the Voice of the Customer (VOC) is clearly understood, translated into requirements, technical specifications and special characteristics. APQP supports the early identification of change, both intentional and incidental and supports the never-ending pursuit of continuous improvement.
What is a PPAP?
The PPAP, or Production Part Approval Process, is a plan to ensure consistent quality in the creation of a part. The primary goal of this control plan is to identify, quickly counter, and factor all that could alter the specifications and production tolerance for a given part.
What are the 18 elements of a PPAP?
Design Documentation, Engineering Change Documentation, Customer Engineering Approval, Design Failure Mode and Effects Analysis, Process Flow Diagram, Process Failure Mode and Effects Analysis, Control Plan, Measurement System Analysis Studies, Dimensional Results, Records of Material / Performance Tests, Initial Process Studies, Qualified Laboratory Documentation, Appearance Approval Report, Sample Production Parts, Master Sample, Checking Aids, Customer Specific Requirements, and Part Submission Warrant.