Hastings Triplet Magnifiers incorporate three separate glass lenses bonded together to form a compound lens to provide sharp, very distinct magnified images without distortion—even under 14 and 20 power magnification. A swingaway, nickel-plated case protects the lens and serves as a handle.
The Measuring Scales (Glass) are for use with the Measuring Magnifiers.
General Purpose Scale measures radii from 1/16" to 3/8", angles in single degrees to 90º, 0.005" and 0.1 mm scales, and line widths of .001", .002" and .003"
Inch Scale measures 3/4" in 0.005" intervals
Metric Scale measures 20 mm in 0.1 mm intervals
Protractor Scale measures 360º in single degrees
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