Specification
Model	A	B	C	D
Total Magnification?	60X	80X	40X	100X
Viewfield	Dia.2.3	Dia.1.5	Dia.4.4	Dia.1.4
Measuring Range	Dia.1.6	Dia.1.2	Dia.3.2	Dia.1.2
Minmum Scale	0.02	0.01	0.04	0.01
Working Distance	28	28	52	28
Elevating range	40	40	40	40