The National Institute of Standards and Technology (NIST) is conducting market research to identify sources for one high-resolution and one low-resolution wavelength meter, both from the same manufacturer, to support its Standard Photonic Thermometer project. The high-resolution wavemeter must operate from 630 nm to 1700 nm with ±0.2 ppm accuracy and a measurement rate of at least 1 kHz, while the low-resolution wavemeter must cover 1270 nm to 1680 nm with similar accuracy and a 25 Hz rate. No specific budget amount or performance location is mentioned in the description. Respondents should submit information as soon as possible, preferably before the closing date, and must be registered in SAM to be considered for any future solicitation. This notice is for market research only and does not obligate NIST to issue a solicitation or award a contract.