which was filled with a crumpled wad of aluminum foil so thin (about one-tenth the width of a human hair) it could not be picked up with fingers. The Sashalite, which was manufactured under contract by General Electric Co., Ltd. in London, came with an instruction sheet directing photographers to insert the Sashalite into "an ordinary electric torch" and to set their shutter to either "Bulb" or "Time".<ref group=note>When Sashalite's instructions mentioned setting a shutter to its "Bulb" setting, the company was not referring to glass flashbulbs but to rubber bulbs. The Sashlite flashbulb was introduced at a time when the equipment typically used for professional indoor portraiture was a large-format studio view camera and a flash-lamp with flash powder in its tray. Advanced hobbyists in 1909—decades before the first flashbulbs—could buy portable folding cameras, made by Conley Camera Company, from Sears Roebuck for $4.75–$21.50 (equivalent to $–$ in ). With the exception of entry-level models, both view-type and folding cameras of this era came with a detachable pneumatic shutter release with a rubber bulb on the end, as seen at right on the $11.75 Model C. With the exception of their entry-level shutter, Conley's shutters—like the Conley Automatic (inset, far right)—had a "B" setting. Though mechanically timed exposures too could be triggered by squeezing the shutter release bulb, "bulb" exposures had the same momentary action as camera shutters have today, as per this description from Sears Roebuck's 1909 Cameras [&] Photographic Supplies, which devoted three pages to the features and operation of Conley's shutters:</span> The Eastman Kodak Company sold cameras before the flashbulb era too. Though their entry level consumer cameras came without the option of a pneumatic shutter release, Kodak retained the convention of using "B” on shutters for the momentary actuation setting but referred to it as "Brief Time" in brochures for cameras like their Folding Autographic Brownies, as well as in instruction manuals for products like their 1 & 1A Pocket "Kodaks" Juniors. "Brief time" was also used in reference works like Newnes Photographers' Pocket Reference Book (1955).</ref> The instruction sheet further suggested an aperture of for Sashalite's larger flashbulb and for the smaller. However, apparently assuming photographers using their product would be doing so in a relatively narrow range of distances common to portraiture, made no mention of flash-to-subject distance. The instruction sheet then directed the photographer as follows: In 1932, Philips introduced what was