F.265 Data Sheet 265

Relay-Ricoh, F-686, 1961

Serial Number or Date Stamp: J.S-3

Country: JPN Primary construction material: bb Case included?: yes

Length of 1 decade = 10 in, and overall scale length = 10 in. The largest physical dimension is 10 in.

Front Scales: Tr1 Tr2 P’ P [ Q ST Sr Stheta C ] D LL01 LL02 LL03

Back Scales: Sh1 Sh2 DF A [ B CF Th CI C ] D LL3 LL2 db

Notes: Lafayette F-686, Vector Log rule; nice condition

References: https://www.sliderulemuseum.com/Ricoh.htm, https://sliderulemuseum.com/SR_Dates.htm#Relay

Date Acquired: 12/17/2020