Spectra Precision HL450 Laserometer is an easy-to-use  tool that accurately measures elevations across the site, and is ideal for use  with any rotating transmitter. The HL450 features a digital readout of elevation  that provides a numeric display of ± 40 mm or ±1.5 inches. The readout is  displayed on the large front and rear LCD’s and shows exactly how far the  elevation is from on-grade. Accurate measurements can be made without moving the  rod clamp, saving time and increasing productivity. The HL450 has a 4" (102 mm )reception height, double the typical industry standard, which allows quick  acquisition of the laser beam. Also included is a patented anti-strobe sensor  that prevents construction lights from setting off the receiver and makes it  easier to identify the laser beam signals. The Laserometer is designed to  survive the tough construction site conditions. It is totally waterproof and can  withstand a drop up to 5 feet (1.5M) onto concrete.
Features and Benefits:
Digital Readout of Elevation allows faster readings  by displaying the exact numerical distance from grade, eliminating the need  to move the receiver to get to "on-grade".
Anti-Strobe Sensor stops construction strobe lights  from setting off the receiver and eliminates phantom strikes for easier  identification of true laser beam signals.
Large reception height allows faster readings by  acquiring the beam quickly, and makes it easier to stay in the beam.
Durable in tough environments provides less downtime  due to damage or service requirements after accidental drops.
Works with most rotary laser level like: Trimble Spectra  Precision, Spectra Physics, Topcon, Sokkia, AGL, Laser Alignment, Leica, CST  Lasermark, Bosch, Porter Cable and many more.