The Vintage Western Electric Amperes D.C. 0-10 KS-14507-L18 Model 321-L is a gauge manufactured by Western Electric in the United States. This model is known for its accuracy and durability, making it a sought-after piece for vintage audio and video enthusiasts. With its classic design and quality construction, this gauge offers a glimpse into the past while providing essential measurements for audio amplifiers and tube amps.