Nailclippers are a recent invention, 1896, attributed to a certain Chapel Carter. ("A brief history of the nail clipper" in "The Size of Thoughts: Essays & Other Lumber", Nicholson Baker, New York: Vintage 1997. ISBN 0-679-77624-9).
I remember the first nailclippers being introduced in the rural area of Southern Belgium where I grew up, end of the 50s, beginning of the 60s. Before that we used scissors. Ordinary kitchen scissors.
And scissors have been around for ages. Probably invented in 1500 BC in ancient Egypt. They looked like two bronze knives fexibly connected to each other at one end. (You can sometimes see those kind of scissors being used shearing sheep. See : http://www.powerhousemuseum.com/collection/database/?irn=232583 )
"Sir Flinders Petrie ascribes the development of cross-bladed shears to the First Century. In the Fifth Century, the scribe Isidore of Seville, describes cross-bladed shears or scissors with a center pivot as tools of the barber and tailor."
("The Story of Scissors" by J. Wiss & Sons, 1948)
First pair of scissors made of cast steel : 1761 (Robert Hinchliffe).
My father used one the first Horowitz electric rotary razors, the single-head Philishave from Philips, but my grandfathers shaved with a straight razor.
"Razors have been identified from Bronze Age Britain. These were made of bronze and were generally oval in shape, with a small tang protruding from one of the short ends."
"Straight razors (also called cut-throat razors because of their potential lethality) with open steel blades were the most commonly used razors before the 20th century. However, they are now chiefly used by barbers."
"The first safety razor, a razor where the skin is protected from all but the very edge of the blade, was invented in the late 18th Century by a Frenchman, Jean-Jacques Perret, who was inspired by the joiner's plane. Marketed as "the best available shaving method on the market that won’t cut a user, like straight steel razors." the first American safety razor was released in 1875 by the Kampfe Brothers. In 1901, the American inventor King Camp Gillette, with the assistance of William Nickerson, invented a safety razor with disposable blades. Gillette realized that a profit could be made by selling a razor with inexpensive disposable blades. This has been called the Razor and blades business model, or a "loss leader", and has become a very common practice for a wide variety of products." [You sell the razor at a loss and make profit on the blades. The same with Polaroid cameras/Polaroid film, and inkjet printers/cartridges, and video consoles/games EVT]
"[The electric razor] was patented in 1928 by the American manufacturer Col. Jacob Schick. The Remington Rand Corporation developed the electric razor further, first producing the Remington brand of razor in 1937. Another important inventor was Prof. Alexandre Horowitz, from Philips Laboratories in the Netherlands, who invented the very successful concept of the revolving electric razor [1939 EVT]. It has a shaving head consisting of cutters that cut off the hair entering the head of the razor at skin level."