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Pickett N 902-ES Simplex Trig

• Type: Trig Simplex
• Size: 10 Inches
• Material: Aluminum
• Scales:
  • Front: K A [ B T S CI C ] D L
  • Back: Instructions
• HvH: 2178

The successor to the 901, adds trig functions and updated instructions.

Three copies in the collection:

Number 1: Low-glare yellow base color. Brown, faux leather sewn paperboard case marked "KREIDER" in permanent marker. Reverse of rule describes basic operations of rule and includes decimal fractions to 1/64.

Number 2: As above, but with grey, sewn paperboard case. Gift of Sara Teller.

Number 3: As above with reddish case. Gift of Ken Osburn.