The DeFelsko PRBN90S-D PosiTector 6000 Cabled 90° Microprobe N90S Only, Measures Coatings on Non-Ferrous Metals, 0-25 mils is a right angle probe for measuring within areas of low headroom. With our smallest measuring tip and best thin-film accuracy, this instrument is ideal for measuring on small parts, hard-to-reach areas, or close to edges. This probe features a heavy-duty, gold-plated locking connector for industrial environments. Probe retains its own unique calibration information (allowing full probe interchangeability).