The 264A is a portable, battery-operated survey instrument for evaluating the resistive properties of static control products such as static dissipative packaging, flooring, or work surfaces over the range of 10E5 to 10E12 ohms or ohms per square. Model 264A uses a parallel electrode configuration conforming to ASTM D-257. A test lead is included for resistance-to-ground measurements.Model 264A is convenient and easy to use. Simply place the 264A directly on the item to be measured. An easy-to-read LED decade display quickly and clearly indicates the resistivity or resistance range.

Range:	105 to 1012 Ω or Ω/Sq
Accuracy:	±½ decade
Test Voltage:	9 volt battery voltage
Display type:	8-decade LED
Battery type:	9-volt, Eveready #216 or equivalent NEDA #1604
Battery life:	Up to 40 hours continuous operation
Electrode:	Parallel bar type
Dimensions:	2.4x1.3x3.8 inches (6.1x3.3x9.7cm)
Weight:	4 oz (113gm) including battery
Accessories:	Carrying case, grounding lead, battery and instructions included

    Combining pocket-size convenience, affordability and ASTM sensing techniques the Model 264A is just what you need to spot defective static control devices and materials in your production areas. 

    Resistivity (Ω/Sq) is measured by placing the Model 264A’s parallel electrode rails completely in contact with the material under test. The geometry of the electrode assembly is such that current flow from one rail, across the material, to the other rail is a direct indication of the material’s resistivity, which is read on the LED display. 

    In the resistance-measuring mode, current flows from ground through the resistive material to the measurement electrode.