E. Leybold's Nachfolger black bakelite dual-scale projection meter with two electrical terminals and a central viewing window

E. Leybold's Nachfolger Bakelite Dual-Scale Projection Meter – c. 1950–1955

€165,00 EUR
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E. Leybold's Nachfolger black bakelite dual-scale projection meter with two electrical terminals and a central viewing window
  • E. Leybold's Nachfolger black bakelite dual-scale projection meter with two electrical terminals and a central viewing window
  • Close-up of the inverted projection scales through the glass window of the Leybold bakelite laboratory meter
  • Reverse side of the Leybold projection meter showing twin scales marked I and II and mounting rails
  • Angled rear view of the Leybold black bakelite projection meter showing the dual-scale window and side mounting rail
  • E. Leybold's Nachfolger black bakelite dual-scale projection meter with two electrical terminals and a central viewing window
  • Close-up of the inverted projection scales through the glass window of the Leybold bakelite laboratory meter
  • Reverse side of the Leybold projection meter showing twin scales marked I and II and mounting rails
  • Angled rear view of the Leybold black bakelite projection meter showing the dual-scale window and side mounting rail
E. Leybold's Nachfolger Bakelite Dual-Scale Projection Meter – c. 1950–1955

E. Leybold's Nachfolger Bakelite Dual-Scale Projection Meter – c. 1950–1955

€165,00 EUR
A distinctive piece of postwar European academic history: a dual-scale laboratory projection meter, also known as a Doppel-Projektionsinstrument. According to the supplied information, this instrument was manufactured by E. Leybold's Nachfolger in Köln-Rhein, Germany, and dates to approximately 1950–1955. Housed in a deep-black bakelite body, this specialized instrument was designed for demonstrations in physics and electrical engineering education. Its unusual two-sided arrangement combines a mirror-inverted, upside-down scale for optical projection using a suitable laboratory projector with a directly readable twin reference scale marked I and II on the opposite side. This allowed the instructor to follow the reading while it was projected for a larger audience. Clean industrial lines, side mounting rails, and distinctive scale windows give this instrument a striking sculptural presence. It makes an appealing addition to a historical scientific instrument collection, a studio, or a Dark Academia-inspired office. Offered as a standalone instrument; no projector is included. Specifications Manufacturer, as supplied: E. Leybold's Nachfolger, Köln-Rhein, Germany. Estimated period, as supplied: circa 1950–1955, early Cold War era. Materials, as supplied: molded black bakelite, precision mechanical internal components, glass viewing windows, and metal electrical terminals. Design: inverted optical projection scale and directly readable twin reference scales marked I and II. Dimensions: 16 × 6 × 6 cm. Weight: 412 grams. Condition Vintage condition with a glossy black housing and visible signs of age and use, as shown in the photographs. According to the supplied description, the glass windows are intact and the internal pointers move freely. This does not establish electrical operation or measurement accuracy; no calibration or accuracy is guaranteed. Sold as a historical scientific and decorative collectible. Please examine the photographs carefully for the visible condition and details. Only one example of this product is available. Tracked shipping is calculated separately.

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