Crossword-Solution: TUBELESS 8 letters, 5 clues 🏆 scrabble score: 10

Nevertheless, the exorbitantly long tubeless refractors, introduced by Huygens, maintained their reputation until Hadley exhibited to the Royal Society, January 12, 1721,[307] a reflector of six inches aperture, and sixty-two in focal length, which rivalled in performance, and of course indefinitely surpassed in manageability, one of the "aerial" kind of 123 feet.

Bradley used a tubeless one 212 feet long to measure the diameter of Venus in 1722; while one of 600 feet is said to have been constructed, but to have proved quite unworkable! Such difficulties, however, produced their natural result.

The outer shell of the ship was tough enough to stop medium-velocity meteoroids, and inside the shell was a self-sealing goo, like a tubeless tire.

Early on the morning of the second day of the "Aphrodite’s" detention in the creek the men of the "Iticaba" were surprised to see nine men, clad in air-tubeless diving-suits, make their way through the compartment which had been allotted to them.

Fifty years later, in 1656, Huygens, with his 123-foot tubeless telescope, solved the mystery and proved the existence of a thin, disconnected ring, which was as astounding a phenomenon as the ears or bars or handles.