Seco 2.5" Sliding Prism - Tilting Reflector included Laser Receivers the N3 will give reliable

the N3 will give reliable results due to the tubular level

The highlighted portion shows a 521-B Spherical Mount

Featuring a high-strength Neodymium magnet with 15 lbs of holding force

Leica GDZ71

The human eye is most sensitive for estimation of equal distances between two narrow vertical lines

Seco 2.5" Sliding Prism - Tilting Reflector included Laser Receivers the N3 will give reliableUse the 2. 5in sliding prism with tilting reflector with SECO's 5120 series geodimeter style prism pole Includes a large 2. 5in (63. 5mm) silver coated prism with protective rubber ring 0 (zero) offset Attaches to the bottom of the graduated section of the pole so heights can be taken close to the ground Large easy to use clamping knob Tilts in 15 increments, spring locked 40 minute leveling vial Target is made of fluorescent yellow translucent poly