Shelfmark

Bec.3

Maker

R. and J. Beck Ltd.

Subjects

optical (diffraction gratings; prisms; spectroscopes; spectrometer; cathetometer; micrometer microscope; spinthariscope; optical benches; lens testing equipment; lenses; maginfiers); metrology (sphereometer; extensometer); medical (radium buttons)

Title

Physical Apparatus and Optical Goods

Description

Earliest Date

Latest Date

1914

Pages

32

Address

68, Cornhill; London E.C. 69 Mortimer St. (Gt. Portland St.)

Other Makers

Cat no

Contents List

Hardback

Prices

Yes

Index

Yes

Illustrations

Yes

General Ref