Profile: Meredith Instruments, Inc. sells laser parts and equipment. Our product line includes HeNe & diode lasers, HeNe systems, HeNe parts, power supplies, diode lasers, and modules & systems. Our 10 mW, 633 nm HeNe laser system includes a cylindrical laser head, matched OEM power supply, and instruction manual. Our LQ series laser modules are designed to provide a compact laser unit at a minimum price. They feature automatic power control (APC) circuitry for a regulated output power over their entire input voltage range. They also have reverse polarity protection.