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4 x M5 x 30 Screws
7' Parabolic Umbrella (84" - Silver)
tolerance +/- 30% Sensitivity -71 dB ±3 dB at 1 kHz
The optical path is fully multi-coated with anti-reflection coatings that increase light transmission
Cardioid Handheld Microphone Transmitter
National 211-RLED Three Objective Cordless Microscope Kirk SS-1 4 x M5 x 30DIN 4x 10x 40xR Objectives 10x Wide Field Eyepiece 40x 100x 400x Magnification Achromatic Parfocalled Parcentered Fine Coarse Focusing LED Illumination Equivalent to 20W Bulb 1. 25 NA Abbe Condenser Lens Mechanical Stage & Movable Slide Holder Ball Bearing Turret Mount Cast Metal Frame & Gray Enamel Finish The 211 RLED Cordless Microscope from National Optical is a three objective single viewing microscope with a 45 inclined monocular. The three
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