Co-axial coarse and fine focusing knobs, provide the highest degree of working convenience the coarse adjustment has a built control to increase and decrease the tension of the focusing knob simply by rotating the adjustment ring. The mechanism is free from back lash fine motion 0-180. the fine adjustment works over the entire coarse focusing range, allowing quick, accurate focusing at any position. ultra smooth quardruple nose piece on ball bearing. built in graduated low friction coaxial mechanical stage 140 mmx130mm mechanical stage travelling. binocular nead inclined at 45 rotatable through 360cwith multi layer coated prisms for better performance. bright field abbe n.a. -1-25 condenser with iris diaphram moved on rack & pinion. built in base 6v-20vv halogen bulb with solid state variable light controlled transformer 220/110 volts. packing: thermocol box in wooden box with lock & key & cardboard packingeye piece objectives magnification w.f. 10x (paired) 4x, 10x, 40x, 100x 40x - 1000x hy. 5x (paired)
