The 1423A Precision Decade Capacitor is a versatile tool for calibration lab and production testing work. With it, a bridge can be standardized to an accuracy exceeded only by that of the highest quality lab standards. Basic accuracy is plus or minus 0.05%. Capacitance range is from 100pF to 1.111uF in steps of 100pF. Stability of plus or minus 0.01% per year. Consists of 4 decades of high quality mica capacitors in shielded enclosure.