The Honeywell Pentax 1/21 Meter is a versatile, handheld light meter used by photographers for precise exposure measurements. It offers both incident and reflected light metering, allowing users to assess lighting conditions in various environments. The meter features an analog needle display for easy reading and a durable build, making it a reliable tool for both amateur and professional photographers. Its ability to measure a wide range of light levels makes it suitable for different photographic situations.