Precision Metal Machining, Inc. - Making Your Concepts Real MADE IN AMERICA

Machining & Assembly of an Aerospace Housing for the Military Industry

Periscope Housing
Periscope Housing

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Periscopes used by military tanks allow the crew to observe their surroundings and direct munitions. Although at Precision Metal Machining, Inc. we had become known for our work with the medical industry, we were pleased when this military customer asked us to manufacture periscope housings for them. Castings always vary in size, so a machining methodology was created that would take into consideration the desired end result without removing excess material in the early stages of production. Fixtures and tooling were made, which allowed us to maintain perpendicularity and parallelism throughout the operations while extending use at minimal cost. Our machinists employed CNC and manual mills, CNC and manual lathes, and various sized thread mills to manufacture the housings out of an aluminum casting and 17-4 stainless steel. The 12" long x 5" wide (at the base) parts were machined to tight tolerances of ±.005", finished to Ra32 or better on machined surfaces, and inspected to verify all dimensions. We produced 200 of the housings in only eight weeks for delivery in New Jersey.

Whether military or medical, our staff delivered the same customer service and high-quality component required and developed a pleased, long-term customer in the process. Contact us directly for further information.

Periscope Housing Project Highlights

Project Name
Periscope Housing
Project Description
Used in military tanks, the periscope allows the crew to observe their surroundings and direct munitions.
Capabilities Applied/Processes
Fixture Design & Implementation
Special Tooling Design
Equipment Used to Manufacture Part
CNC Mill, CNC Lathe, Manual Mill, Manual Lathe
Overall Part Dimensions
12” long, 5” wide at the base
Tightest Tolerances
Material Used
Aluminum casting, 17-4 SS
Material Finish
Ra32 or better on machined surfaces
Industry for Use
In Process Testing/Inspection Performed
200 pieces
Delivery/Turnaround Time
8 weeks
Delivery Location
New Jersey

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