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Dial Type
Pit
Depth Gauges
Models PG-1200 & PG-1800
by Exacto Machine &
Tool
Mechanical pit depth measurement with ease,
accuracy & repeatability
Model PG-1200 Pit Depth Dial Gauge with
12" Bridging Bar
Description
The Exacto pit gauge is designed for ease of
use, accuracy, and repeatability. This design includes a 12" bridge
(Model PG-1200) or an 18" bridge (Model PG-1800) to effectively span
the pit to be assessed.
Corrosion profiles can be plotted quickly and
accurately by moving the dial indicator incrementally along the
bridging bar and recording surface position versus depth. Notched feet
prevent the bridge from rocking on a rounded surface. Ceramic magnets
securely hold the gauge in place, a definite bonus when working
upside-down. The left-handed scale measures increasing depth as the
tip drops into the pit. A locking adjustment screw allows instant
calibration to a reference surface. Thumbscrews facilitate one-handed
operation.
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Included with Pit Gauge Kit
- 12" Bridging Bar
- Extension Rods up to 10"
- Protective Molded Insulated Case
- Instruction Sheet Dial Indicator
- Conical Contact Tip
- Allen Wrench
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Molded protective case |
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Conical contact tip and
extension rods |
| New Cased Kit from
Exacto. Includes molded, padded carrying case,
digital pit depth gauge, 12" bridging bar, and 18"
bridging bar. Also available with
digital pit depth gauge.
You can also buy the case all by itself if you already
have the PG-1200 and PG-1800 items. |
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1. |
Calibrate (or
"zero") the dial indicator. Place gauge on a reference surface. This surface
should be true and without pits or other variations, and gauge should be
oriented in a similar manner as surface to be assessed. Loosen locking
mechanism, and rotate dial face until "zero" is aligned with large needle.
Tighten locking mechanism. |
| 2. |
Place gauge on surface to be assessed. "Feet" should be positioned on a true
surface and should span pit. |
| 3.
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By loosening
thumbscrews, gauge can slide forward and backward in bridge. By watching the
needle, the deepest reading can be attained. This feature (combined with the
scale on the bridge) also allows multiple readings to be taken at various
intervals. Note: thumbscrews must be re-tightened prior to recording depth
reading. Failure to re-tighten thumbscrews will result in a significant
measurement error. |
| 4. |
Read the
depth. Small inner dial represents tenths of inches, and outer dial
represents thousandths of inches. For example, if inner dial indicates a
reading between 1 and 2 and outer dial indicates a reading of 66, then pit
depth is 0.166" deep. One complete rotation of inner dial represents 0.500". |
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