Protimeter Hammer ElectrodeHeavy Duty Slide HammerThe Hammer Electrode has pin-electrodes with insulated shanks so measurements are taken at the tip only. This allows measurements at different depths in wood and wood structures, such as floors and timber stock.Use with MMS Plus and Surveymaster.ACCESSORIES:AC102A - Hammer Probe PinsPGE5296 - HAMMER NEEDLE THREADEDPGE0529 - HAMMER NEEDLE OLD STYLE - NO THREADS