• 360 degree clear acrylic base admits light from all directions
• 10X Magnification
• 2 lens optical system
• 0.95"lens diameter
• 1.1" field of view
• 1.36" diameter x 1.60" height (34.5 x 40.6mm)

Model 171 60-Minute General Purpose Timer Specifications

Accurate and durable 60-minute timer with sturdy case and protective covers to prevent corrosion. Two three-wire outlets allow automatic switching of external devices.

• 360 degree clear acrylic base admits light from all directions
• Optical quality acrylic lens elements
• Fixed focus loupe
• 2 lens optical system
• 1.00" (25.4mm) lens diameter
• 1.10" (28.0mm) field of view
• 1.77 diameter by 1.57" length (45.0 x 40mm)

START OPPN SERIES

FEATURES

• THE MOST ECONOMICAL OF OUR HIGH POWER MICROSCOPES
• DUAL INCH/METRIC GLASS SCALE
• FOCUSING BY SMOOTH RACK AND PINION WITH KNOBS ON BOTH SIDES OF THE MICROSCOPE
• STURDY METAL BASE WITH A CHROME PLATED STEEL OPTICAL TUBE
• CUSTOM PADDED STORAGE CASE INCLUDED

FIELD OF VIEW: .090'' (2.3mm)
MEASURING RANGE: .10'' (2.5mm)
MIN. SCALE DIVISION: .001'' (.02mm)
WORKING DISTANCE: .94'' (23.90mm)
OVERALL DIMENSIONS: 2.50 X 8.5'' (63.50 X 216mm)
WEIGHT: 22.5 oz. (638g)

Key Features

• 360 degree clear acrylic base admits light from all directions
• Optical quality glass lens elements
• Coated achromatic lenses
• 3 lens optical system
• Measures 1-21/64" diameter by 1-13/32" height