The rugged GL422N laser can withstand drops of up to one meter (three feet) onto concrete and tripod tipovers up to 1.5 meters (five feet). This strength, combined with full weatherproofing and dustproofing, reduces downtime and lowers repair costs over the life of the product. The GL422N laser system now includes the advanced HL760 Digital Readout (DRO) receiver that provides automatic Grade Match, PlaneLok and Fingerprint function. Grade Match measures and displays the existing grade over unknown ground.As a consequence it eliminates time consuming and error prone calculations PlaneLok automatically locks on to an existing horizontal elevation or vertical alignment point which eliminates all drift or possibility of error due to improper calibration or weather. The unique Fingerprint function only accepts the beam from the laser it is paired with. Menu driven user interface reduces learning time and eliminates complex button pressing to activate advanced features. RC402N radio remote control allows control of all laser functions from up to 330feet or 100 meters. Durable design reduces downtime due to drops and tripod tip overs. Automatic Grade Match eliminates time consuming and error prone calculation. Mask mode eliminates interference with other crews on the jobsite. HL760 receivers so you can choose the best option to suit your application. The item "SPECTRA GL422N DUAL SLOPE LASER With DR400 DIGIROD" is in sale since Thursday, May 21, 2015. This item is in the category "Business & Industrial\Test, Measurement & Inspection\Levels & Surveying Equipment\Levels & Autolevels\Rotary Lasers". The seller is "jcsmithsyr" and is located in Memphis, New York. This item can be shipped worldwide.