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Tyrant Lizard King
Assemble the die-cut pieces of circuitboard in this simple kit to make a Tyrannosaurus Rex model (click the Related Products tab to see other dinosaurs). Teach kids basic electronics principles while they build their own cool dinosaur nightlight. Add the included 9-volt battery and flip the switch to light up nine red LEDs. The tyrannosaurus model snaps together in five simple steps, and instructions are included. There are only 14 pieces including the battery compartment and battery. Adult supervision is recommended to ensure that all of the metal contacts are touching properly -- because the joints fit very tightly (by design), young children will become frustrated and might break the solder contacts. No tools are required for assembly, which takes about 15 minutes. You might want to use a nail file or rasp to persuade some of the tighter pieces to slip together more easily (such as getting the legs into the base), and a spot of white glue will keep the forearms from falling off.
The assembled T Rex is a desk-friendly 9.5" (24.1 cm) long x 2.5" (6.35 cm) wide and 6" (15.24 cm) tall. Adults will appreciate these LED dinosaurs as desk decorations.
Non-US customers: this product cannot be shipped outside of the US or to US military addresses (APO, FPO, DPO).
Are you curious...?
T-Rex was the largest known land predator of all time until Gigantosaurus recently dethroned it. This meat eater stood up to 20 feet (6 m) tall, was 40 feet (12 m) long, and weighed around six tons. Its skull alone was five feet (1.5 m) long and its powerful legs may have enabled it to run as fast as 45 mph (72 kph), although some scientists say that its weight prevented it from running (becoming airborne between strides) at all. The earliest reconstructions depicted a lumbering tail-dragger, while more recent depictions show a sleeker animal with its tail held aloft to balance its heavy head. If it could run, T. Rex had great difficulty turning -- remember to zigzag if one ever chases you.
Tyrannosaurus Rex ruled the forests and swamps of the Cretaceous earth until the age of dinosaurs ended 65 million years ago. Its 3" (7.6 cm) eyes faced forward for binocular vision, giving it the excellent eyesight that one expects in a top predator. Its brain's large olfactory area, on the other hand, supports the argument that T. Rex was a scavenger. Its tiny but powerful two-fingered arms are somewhat puzzling. Tyrannosaurs might have used them to grasp their mates while copulating, or they might have used them to rise from the ground, or they might have held struggling prey until the enormous jaws did their work. Fossils of more than 30 individuals have been found, some of them so complete that they left skin impressions. T. Rex probably had a pebbled, scaly hide, although at least one fossil hinted at feathers.