Model Number: GD-190, 165, 130 Brand Name: Huayang Key Specifications/Special Features: GD-190/165/130 magnifying glassfor magnetic compassMagnifying glass of magnetic compassismanufactured in accordance with CB 334-1988(marine magnifying glass of magnetic compss technical terms) and is suitable for the marine using matched with steering compassPut it on the compass dial to magnify the graduation degree, mirrir image legible and tis shape unchangedSpecifications:Type armbrace flexin range amplification weight

GD-130:

• 122-147mm 2 0.2kg

GD-165:

• 163-223mm 2 0.3kg

GD-190:

• 178-238mm 2 0.3kg