4" Verifire SV 25-10

The unit arrived with the upgrade to Verifire SV already done, which saved me setup time. S/N 06-29-651772 is clearly marked, so tracking calibration history is straightforward. Everything's clean and ready to align.

The grey case is sturdy and keeps everything organized, which I appreciate since this is a precision tool I move around. The fact that it’s been upgraded to the SV model and came with the certification paperwork gives me solid confidence in the calibration out of the box.

The interferometer calibration held perfectly right out of the grey case, and the serial number tracking made setup a breeze. I’ve been using it for quality control on optical components and the readings are consistently spot-on. Really solid piece of metrology gear.