Gardco :: Positest

Certificate of Calibration showing traceability to PTB included with every gage
Matching Calibration Standards and Procedures available for every model
Highly wear resistant Carbide Probe for longest life and continuous accuracy
Remove center of dial cover for easy calibration adjustment
Conforms to national and international standards
Extra rugged housing, not affected by mechanical shock, water, acid or solvents
Unique overall design, fully supported, positive positioning, no pivoting tendencies during measurement
Can be used fully supported or with only the front probe area contacting the surface
Functions on a permanent rare-earth cobalt magnet
No batteries/electronics
2 year warranty
Positive visual and audible indicators to designate when thickness reading is established
“V” grooves in probe housing and Gage base allow correct positioning on cylindrical objects
Compact, lightweight, precisely balanced, independent of gravity, can be used in any position
GO/NO-GO button can be pre-set for rapid measurement
Probe contact and dial rotation all in a one-finger operation
Furnished with wrist strap and instructions in a high quality leather case with belt loops for your convenience

Technical Data
	DF-FM	DF-GM
Scale Ranges:	0 - 80 mils	0 - 8 mils
Tolerance:	±0.2 mils up to 4 mils (±5% of the reading over 4 mils)	±0.04 mils up to 0.8 mils (±5% of the reading over 0.8 mils)
Applications:	Hot dip galvanizing, hard chrome metalizing, paint, enamel, plastic coatings on steel	Electroplating, thin paint films, phosphating on steel

1. Purpose
	A.	For the non-destructive measurement of non-magnetic coating on steel.
2. Procedure
	A.	Place gauge on surface to be measured. With your index finger rotate the scale wheel forward (counterclockwise) until probe makes contact with the surface, then slowly and steadily turn scale wheel backwards (clockwise) until a click is heard and the yellow indicator appears. At this point read coating thickness on the scale. Note: Surface to be measured must be free from dirt, oil or grease.
	B.	When measuring on rod or cylindrical materials, align the “V” groove in the probe housing and instrument base with the rod or cylinder.
3. Calibration
	A.	All PosiTest gauges are factory calibrated to NIST Standards.
	B.	When measuring on rough surface or odd shaped substrates, the PosiTest may require recalibration by means of the following procedure:
		1.	Remove cover in center of glass. Holding the scale wheel securely, insert ball point of pen or similar object into one of the four holes exposed in the center of the dial. Rotate right or left to effect proper calibration. Replace cover securely in center of glass.
		2.
		3.
	C.	Never recalibrate PosiTest on shim stock. Only on thickness standards having an applied coating.
4. Care
	A.	Never expose the PosiTest to any magnetic fields.
	B.	Periodically check the probe tip for foreign matter, removing same with a clean, dry brush or soft cloth.
	C.	When not in use always return the gauge to its carrying case.

Positest Zinc Coatings Conversion Table

Conversion Chart 2

Positest® Coating Thickness Gauge