The refurbished National Optical Advanced 157 Series is a great choice for AP Biology, college courses, veterinary and intermediate clinical use, as well as industrial and hobby applications. Measures 15" high and weighs 11 lbs. Free shipping.
FEATURES:
| Cat. No. | 157 |
| Head |
Binocular, Inclined 45°, Rotates 360° |
| Din Objectives | 4X, 10X, 40XR, 100XR Oil |
| Nosecone | 4 Hole Turret, Ball Bearing Mounted |
| Eyepieces | W10XD 18mm with Pointer |
| Stage | Graduated Mechanical Stage, 5.25" x 5.25" with Low Position Coaxial X-Y Controls. |
| Substage |
N.A. 1.25 Abbe Condensor with Iris Diaghragm, Spiral Mount, Swing-out Filter Holder with Blue Filter |
| Focusing | Separate Course and Fine Focus w/Slip Clutch (to protect mechanism and slides from damage) |
| Illuminator | 5W Fluorescent |
| Replacement Bulb | 2202F |
| Original Mfr Sugg. List | $650.00 |
