490. Haven't been able to confirm it, but most probably used by plumbers, with the ends employed to lift/open drains.





491. A whiffletree tip, this piece of hardware was placed on the end of a whiffletree or singletree, which is a pivoted horizontal crossbar to which the harness traces of a draft animal are attached and which is in turn attached to a vehicle or an implement.





492. Binocular focus wheel







493. Cigar travel humidor





494. Anti dozing safety alarm device, worn behind the ear while driving.


A mercury switch activates the alarm when the driver's head moves down as he is falling asleep.






495. Carpet seam roller