



SMR Summer Savings!
- Save up to 40% on your SMR purchases!
- Measure all Summer long with API’s SMRs. Get steep discounts on all your orders. The more you buy, the more you save!
- API's break resistant Spherically Mounted Retroreflector (SMR)s are constructed with a one-piece optic, eliminating risks associated with glass panels shifting, separating or fracturing. Our SMRs can track over 80m with optical centering accuracy down to ± 2.5 microns offering high accuracy line of sight measurement.
- Our SMRs are available in a range of sizes from .5” to 1.5”, with different options for hollow-core, prismatic, and precision measurement available.
- Our SMRs work with all tracker brands.
- Orders of 10 or more SMRs will receive free SMR certification within 1 year.