A calibrated 1:1.6 four-bar parallelogram pantograph (copy = ×0.625 of the master) plus its survey kit: base rail + 2 long arms + 2 short arms + press-in pivot bosses/pins, a steel-needle tracer, a pen-collet scribe, a two-position ratio-lock, a 200×140 mm hidden blueprint board, a matching 5…
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