Digital MicroGage- Small Bore Inspection
Digital MicroGage
A standard bore gage stops making sense once the hole drops under about a half inch. Fowler-Bowers MicroGage is a 2-point electronic bore gaging system built specifically for that gap, measuring bores from roughly 0.037" to 0.407"/0.95 to 10.35mm across eight fixed-range models. Each unit is made in England and priced for the precision it holds at that scale, so picking the right range matters more here than picking a feature tier.
(~72 words)
Fowler Bowers 0.037 - 0.061"/0.95 - 1.55mm MicroGage
$3,871.80
Price
On Sale
Height Range
Accuracy
Structure
Bluetooth
Air Cushion Base?
How to choose
Resolution vs. accuracy
Resolution isn't accuracy
Resolution is what the display can show you. Accuracy is what you can trust. Check the accuracy spec against your print, not the resolution number on the box.
IP ratings
What the rating actually covers
IP54 handles dust and light splashing. IP65 adds water jets and finer dust. IP67 survives a coolant bath. If it lives at the spindle, it needs IP67.
Data output
When Bluetooth is worth it
Bluetooth pays for itself when the reading needs to land in an SPC log or report. If a checkmark on a traveler is the whole job, it's more caliper than the job needs.
Common questions
A caliper slides along a full measuring range for general parts. A caliper gage is built for one specific feature, like an internal groove or bore, and won't measure outside that narrow range.