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Introduction Procedure List of Contents Appendices Photo/Map Sitemap History

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Signs and Abbreviations

¥ Yen; standard unit of Japanese currency I.U. international unit
TV television A ampere
fil filament V volt
tab tablet W watt
doz. dozen(12) Ω ohm
vol(s) volume(s) Hz hertz
AC altenating current MHz megahertz
DC direct current dB decidel
AM amplitude modulation HrA “A” scale of Rockwell hardness
FM frequency modulation HB/2H hardness of lead pencil
UHF ultra-high frequency d denier
C Centigrade dpm disintegration per minute
millimicron -Sph concave spherical lens
µ micron +Sph convex spherical lens
mm millimetre D diopter
cm centimetre () combimation of spherical and cylindrical lens
m metre -Cyl concave cylindrical lens
km kilometre +Cyl convex cylindrical lens
yd yard direction of exis of cylindrical lens
tan Japanese fabric measure (see App. 10) Pd pupil distance
mm² square millimetre % percent
squaremetre + plus; sign of addition
yd² square yard - mimus; sign of subtraction
mg milligram ± plus or minus (probable error)
g gram = equal to
kg kilogram Ø diameter
ton metric ton f lens aperture
ct carat α alpha
cm³ cubic centimetre β beta
cubic matre γ gamma
cc cubic centimetre (liquid) λ lambda
ml millilitre Φ phi
l litre Ψ psi

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The contents of this site are excerpted from THE OFFICIAL RECORD OF TIME CAPSULE EXPO'70(March 1975). Please note that company and organization names may differ from those of the current ones.

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