Pistol Grip
The pistol grip is the workhorse ergonomic for in-machine measurement, fast to use, ideal for high-volume shop-floor work.
Modular Bore Gage Options & Accessories
IP67, Bluetooth, ModularOne handle.
One handle.
Endless capability.
A traditional bore gage solves one problem. The Fowler Bowers system gives you a platform, the pistol-grip handle, and the electronics and lets you grow your capability by adding different heads as-needed.
Pistol-grip bore gage with depth extensions & depth stop
System vs. Single Tool
One system replaces a drawer full of single-purpose gages.
A go/no-go plug or a dedicated bore mic does exactly one job. The Fowler modular pistol grib bore gage system does that job...and the next twelve.
Dimension
Fowler Bowers - The Modular Bore Gage System
Single-Purpose Tool
Conventional
Measures plain bores
Fowler Bowers - The Modular Bore Gage System
✓
Yes — standard three-point head.
Single-Purpose Tool
✓
Yes — that one diameter only.
Measures threads, grooves & splines
Fowler Bowers - The Modular Bore Gage System
✓
Yes — swap heads, same handle.
Single-Purpose Tool
×
No — needs a separate dedicated tool each.
Gives an actual diameter
Fowler Bowers - The Modular Bore Gage System
✓
Yes — real numbers, not pass/fail.
Single-Purpose Tool
×
No — a plug only tells you go / no-go.
Self-centering in the bore
Fowler Bowers - The Modular Bore Gage System
✓
Yes — three-point geometry centers itself.
Single-Purpose Tool
×
No — relies on operator feel.
Repeatable across operators
Fowler Bowers - The Modular Bore Gage System
✓
Yes — constant spring force every cycle.
Single-Purpose Tool
×
No — result varies by who measures.
Cost to add a new size
Fowler Bowers - The Modular Bore Gage System
✓
Low — add a head, keep the handle.
Single-Purpose Tool
×
High — buy a whole new tool.
TWO BODY STYLES · SAME PLATFORM
Pick the base handle that fits the job. Heads work across both.
Mic Head
Pistol-grip ergonomics and in-machine workflow fit production environments where pulling parts off fixtures isn't an option.
What's in the box
A complete kit ready to measure on day one.
Every system ships as a foam-fitted case. Handle, heads, setting ring, and indicator, calibrated and ready to go.
12345
1
×1
Pistol-grip handle
The one constant every head in the system mounts to it. Ergonomic handheld. Spring loading retracts the anvils, releasing the pistol trigger engages the anvils to your surface
2
×3
Three-point measuring heads
Self-centering heads sized to your bore range. Locks it in place with the same orientation every time
3
×1
Setting ring
Master ring to zero the gage to a known size.
4
×1
Digital indicator
Reads the diameter directly no conversion math. Connected via Bluetooth for data capture, logging or just show it on a bigger display
5
×1
Foam-fitted case
Each component has its place. Nothing rolls off the bench.
Have a challenging part?
Let us know what you're measuring. We'll spec the right kit. Or we'll build it for you.
See the pistol grip bore gage in action...
Service Center
Canton, Massachusetts.
When something does go wrong, you don't ship to overseas service centers and wait. Our team handles repair, calibration, and warranty service for every bore gage we sell.
Built to Last. Backed by 80 years of service.
For calibration, service & repair
The bore gages we ship today are built on the same fundamentals that have kept 20-year-old units running on shop floors across North America.
Annual Calibration
NIST-traceable, with documented certificates ready for ISO 9001 and AS9100 audits.
Electronics Repair
IP67-rated head repair, plus refurb-replacement when a fresh unit makes more sense than piecemeal fixes.
Mechanical Service
Cones, anvils, and springs are all serviceable. Custom heads supported just like catalog products.
Warranty Coverage
Manufacturing defects covered — including coolant leak-through on IP67 electronics inside the warranty period.