Bi Metallica Thermometers - Model 4135

3" Head Diameter - Dual Fahrenheit and Celsius scales - Model 4135

Specifications and Features

• Designed to meet the needs of the amateur or professional
• The Solar® Weston exclusive MIRROBAND® dial eliminates parallax error
• All stainless steel construction
• Unique stainless steel clip adapts the thermometer for tray or tank use, or for hanging on any projection in the dark room
• Outer Fahrenheit scale is black and the inner Celsius scale is red
• Dual scale has clearly defined numerals and divisions indexed at 68"F and 20"C
• 3" head diameter
• Stem length: 6" Spiked.
• Accuracy: ± .25% at 68°F and within ± 1% over the remainder of the range
• Range: 25° to 125°F
• External adjustment for calibration.