Relay-Ricoh Relay 105

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Relay-Ricoh Scientific Instruments Co. "Relay" No. 105

Obverse
Obverse
Reverse
Reverse
  • Type: Closed Body Rietz
  • Size: 10 Inches
  • Material: Bamboo and celluloid
  • Scales:
    • Front: K A [ B CI C ] D L
    • Back: [ S ST T ]
  • HvH: 2255

Inch and centimeter scales on body. decimal fractions of inch to 1/16 and foot to 1/4 inch; unit conversions; materials properties. ST scale labelled "S&T". Brown sewn leather case.

Includes the inevitable celluloid strip with physical properties and unit conversions.

Gift of Weldon Teetz.

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