
If you can test it, we can fixture it.
From one-off clamping tools to Caltrans-approved compaction fixtures — and precision test specimens machined for Bay Area labs.
Built around your test.
We make custom test fixtures and tools to your order — like our Soil Compaction Tester, “All Thread” gripping tools and the special attachment for testing window-washer power climber anchors.
- Custom test fixtures for lab or field
- Gripping and clamping tools to your bolt specs
- Adapters and attachments for existing equipment
- Replacement parts for Howlett equipment

From sketch to shipped.
Send your idea
A drawing, sketch, photo or just your test requirements.
Talk to Mike
We review materials, loads, sizes and how the fixture will be used.
Quote & machine
You get a quote; we build it in our Berkeley shop.
Test-ready
Shipped to your lab or job site anywhere in the U.S.
Specimens for Bay Area test labs.
We machine all types of materials for all kinds of tests.
Impact Charpys
Notched impact specimens machined accurately for toughness testing.
.505 Tensile specimens
Standard round tensile specimens for strength and elongation testing.
Reduced sections
Reduced-section tensile specimens from plate, bar and welded coupons.
Diagrams are illustrative. Specimens are machined to the standard or drawing you specify.

Clamping tools
All-thread gripping tools, 1/4″–7/8″.

Compaction fixture
Caltrans-approved soil sub-base tester.

Mechanical grips
For difficult-to-hold materials.

Ceiling wire tester
Straight or 45° pull testing.
Need a fixture that doesn’t exist yet?
Send Mike your drawing, sketch or requirements. We answer all inquiries within two business days.
