We provide SPT Hammer Energy Measurements for standard penetration test hammers to get efficiency ratings which can then be used to adjust blow count N values to a normalized N60 value. This is sometimes called a Hammer CalibrationHammer Energy Calibration, Hammer Energy Test, SPT Hammer Energy Measurement Test and other variations. 

The field tests are performed in accordance to ASTM 4633. The tests follow with a certificate of calibration and by request a waterproof calibration sticker to place on the tested spt hammer. A report with raw field data records, analysis, graphs and a summary of recorded SPT hammer energy measurements is available for an additional charge.