The cost of a 3M overhead projector can vary in price depending on the model and selling. The cheapest models go for about $200 while the more expensive models cost about $600.
no direct cost is not an overhead
No. Cost would include the cost of materials. Overhead would not.
"Overhead" is the cost of things like rent and supplies.
Total cost/ full cost which include Prime Cost *Direct Labour cost *Direct Material Cost *Direct expenses Production Overhead *Variable Overhead *Fixed Overhead Selling and Distribution cost Administration Cost
overhead allotment means the charging of overheads to cost units or cost centres.
Due to the bright bulb, the 3M 2000 overhead projector can use a substantial amount of power and is not, unfortunately, Energy Star rated.
The 3M 2000 has a brightness of 1,600 lumens, which should be bright enough even in moderate daylight.
The 3M 2000 body won't get hot to the touch, but if the bulb cover is removed, the bulb can easily cause a serious burn.
The overhead projector was invented in the 1960's.
One can purchase a 3M projector both in local stores and online stores such as the following; Amazon, solutions 3M, Digital Trends, Junglee and Cnet Planet.
It depends. Some don't cost that much it all really depends on ehat kind of features that are wanted in a overhead projector. They can be hard to find though.
The projector can reach a pretty high temperature if left on for a while. So I think the main danger of an overhead projector is simply the heat. ;)
My guess is that with LCD and DLP projector coming down in price, we will be seeing less and less of the overhead. When a video projector is used with an interactive whiteboard or tablet the possibilities are limitless.
projectionist
retroproyector
You don't need a slide projector or an overhead projector.
This is referred to as an opaque overhead projector, or sometimes simply as an "opaque projector." This is in contrast to the regular overhead projector which must have transparencies to project, an opaque projector can project an image of opaque objects such as the paper pages of a book.