Looking to purchase a used 2nm spectrophotometer

Hello there,

I am about to start professionally calibrating and need to purchase a spectrophotometer. Information states that laser projection is not supported by devices that measure 4 nanometers or higher so I am looking for one that is specifically at 2nm.

Since I am just starting, looking to get a good deal on used equipment first. Once I make a marginal return of investment I will acquire better gear if needed.

Current Gear Owned For Visual Calibration: 1D3DS OEM, Pi4b+ W/ Ted's Pattern Generator

Location: KY, USA