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It is not possible to use a pointing machine to produce enlarged or reduced copies; the traditional instruments for this are a set of calipers or a three-dimensional version of the pantograph. [6] However, there is also a special version of the pointing machine that was used for mirroring, enlargements or reduced carving. [7]
Drafting pantograph in use Pantograph used for scaling a picture. The red shape is traced and enlarged. Pantograph 3d rendering. A pantograph (from Greek παντ- 'all, every' and γραφ- 'to write', from their original use for copying writing) is a mechanical linkage connected in a manner based on parallelograms so that the movement of one pen, in tracing an image, produces identical ...
The 3400 series trains entered service in 1993, and were built using the underframes and control equipment from the original AE series Skyliner Limited Express EMUs and steel bodies based on the (stainless steel bodied) 3700 series EMUs. [1] Construction continued until 1995. [5]
The N1000 series fleet first entered revenue service on 15 April 2002 as a successor to all remaining original 1000 series sets. [3]: 24–25 [4] The type garnered its designation as New 1000 series, frequently shortened to N1000 series, to distinguish it from the original 1000 series, which remained in service until 2010.
Another wiper design (Fig. 6) is pantograph-based, used on many commercial vehicles, especially buses with large windscreens. Pantograph wipers feature two arms for each blade, with the blade assembly itself supported on a horizontal bar connecting the two arms. One of the arms is attached to the motor, while the other is on an idle pivot.
The heart of the 024 and 026 keypunches was a set of twelve precision punches, one per card row, each with an actuator of relatively high power. Punch cards were stepped across the punch one column at a time, and the appropriate punches were activated to create the holes, resulting in a distinctive "chunk, chunk" sound as columns were punched.
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