PRECISION VARIABLE/ DECADE RESISTOR/RESISTANCE BOX for Lab Tool/ Experimental Use High Accuracy and Stability !!! Wide Variable Range !!! Major Features / Specifications: . 0.1 to 99999.9 ohms variable resistance; . Totally Sealed in a box; . Complies with IEC-74 Laboratory d.c Resistors; . Vaviable range : 6 Switchable Ranges; . Resistance Range : 9 x ( 10000 + 1000 + 100 +10 + 1 + 0.1 ) Ohm; Accuracy : x10000 Ohm , 0.1%; x1000 Ohm, 0.1%; x100 Ohm, 0.5%; x10 Ohm, 1%; x1 Ohm, 2%; x 0.1 Ohm, 5%; . Operation Condition : 5 to 35C, 25 to 80% Relative Humidity; . Residual resistance : 0.03 + 0.01 Ohm; . Norminal Power / Power Limit : 0.5W / &lt;=1W; . Insulation Resistance : &gt;= 100 M Ohms; . Insulation Voltage to ground : 650 V . Dimension : 185 x 130 x 115mm; . Weight : &lt;= 2Kg;