In the dark days before computers, if you wanted to rescale a drawing you had to do it by hand. For small drawings or working from a prototype, a set
Inverted Pantograph SLS 201
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818 Combo Pantograph by Linda V. Taylor
The Proxxon Pantograph
A pantograph is used to change the scale of drawings; this one, with 15 wooden arms, has 19 different settings and can be used to enlarge any plane
Pantograph Set
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The structure of pantograph Download Scientific Diagram
The Manfrotto Extra Long Pantograph is made of aluminum (P-Al MgSi UNI 3569) and manufactured according to DIN 15560-46. The attachments at both ends of the pantograph are 16mm, male on the bottom and female on the top. The load is supported by a steel cable of 2mm. diameter (safety factor 12). Loads up to 12Kg can be suspended using only the patented friction device, while loads up to a maximum of 18kg require the use of the optional springs.
Manfrotto Ff3514n86 3.8 M Black
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