Pocket Comparator
 |
Has a precision ground achromatic lens
(3 element, 2 groups), photo etched
scale, with 7x magnification.
Has a precisely ground achromatic lens ( coated 4
elements, 2 groups), photo etched scale with a 10x
magnification.
|
Has a precision ground achromatic lens
(3 element, 2 groups), photo etched
scale, with 7x magnification.
Has a precisely ground achromatic lens ( coated 4
elements, 2 groups), photo etched scale with a 10x
magnification.