Model THI79 Incubator Thermometer
Heavy laminated poster board back, black numerals and markings, red spirit. Two scales. -30^o to 50^oC in 2^oC increments (incubating temperature of 37.5^oC is also marked). -20^o to 120^oF increments (incubating temperature of 99.5^oF is also marked). 1 1/2" (3.8 cm) x 3 7/8" (9.8 cm). Wt. 1 oz. (28 gm).

Model THI300 Incubator/Brooder Thermometer
Plastic case-suction cup attachment. Blue numerals and markings. Two scales. -0^oC to 50^oC in 2^oC increments. -32^oF to 120^oF in 2^o increments. 3/4" (1.9 cm) x 3 1/2" (8.9 cm). Wt. 2 oz. (56 gm).

Model 5301 Brooder Thermometer
White, plastic frame. Multi-position mounting bracket. Non-fading red spirit. Two scales. -40^oC to 55^oC (red scale) in 1^oC increments. -40^oF to 130^oF (blue scale) in 2^oF increments. 2 1/3" (5.9 cm) x 7 5/8" (19.4 cm). Wt. 4 oz. (112 gm).

Model THI200 Hygrometer
Uses THI150 thermometer. 9" (22.9 cm) wick with water bottle. Simple instructions on how to take dry bulb reading, wet bulb reading and then how to determine humidity. Wt. 3 oz. (84 gm).

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Model 5525 Hygrometer
A wet and dry bulb hygrometer. Complete instructions included. Take the temperature difference between the dry bulb and wet bulb and use chart to find relative humidity in percent. Permanent chart can be read at a glance, swings aside on hinge for access to reservoir. Reservoir easily removed, easily refilled. Scale range 0^o to 120^oF (-18^o to 40^oC) Reads in ^oF only. Plastic back, metal scale and 7" (18 cm) red spirit tube. Wt. 8 oz. (.23 kg).

Model THI150 Adjustable Thermometer
1" (2.54 cm) dial bimetal face. Stainless steel case. Can be Re-calibrated. Reads in ^oF only. 0-220^o in 2^o increments. Grommet fits 1/2 inch hole, 5 1/2" (14 cm) long. Wt. 2 oz. (56 gm).