While to most people they may seem a very mundane and all too common tool, the ladder can be a very sophisticated equipment that has been designed for specific tasks or trades. Here are some really clever types of ladder and how they are employed.
Surveyors ladder one of the most intelligent designs of ladder, the surveyors ladder is collapsible to a fraction of its original size which has obvious advantages. So called because it was designed for surveyors and those in construction to fit in the back of their car, a whole host of other trades find them useful.
Locksmiths often use surveyors ladders as they rarely have t scale too high and their equipment needs means they don't do not need a large van. Photographers often use these handy collapsible tools too. Often to ensure a good picture cameramen have to gain some height and a surveyors ladder, which can be extracted and erected in seconds, is good method for somebody without a large vehicle.
Combination Ladder these ladders come in a variety of ingenious designs and combine the best design principles of differing types of ladder. Many combination ladders are part step-ladder, so self supporting and fold-able but have extension and platform parts. They are often used for working at differing heights such as on a staircase where one leg of the ladder is on a higher plane that the other.
Combination ladders come in various varieties and some can transform into a multitude of different shapes and heights often for hard to reach areas they provide some sort of solution.
Step-ladder Whilst the step-ladder lacks the sophisticated design of the combination or surveyor's ladder, never-the-less, because of the sheer number of applications and uses, the step-ladder is without doubt the most versatile ladder.
Nearly every type of tradesperson will use a step-ladder at some point and because they fold away they can be transported and stored easily. There true advantage though is that they are self supporting and have a platform to sit or place tools upon.