料
WILD TO Compass Theodolite ..
Small handy instrument. Used mainly for compass traversing, determination of ground control points in photogrammetry and on building yards.
Accuracy of circle readings 1 or 2o
Telescope with internal focusing and coated lenses. May be used either as builder's theodolite (fixed horizontal circle) or compass theodolite.
The compass - circle in the interior of the instru ment has a sapphire centre working on a conically ground needle-point, & carries a strongly-magnetised needle which orientates it to the North. By raising the circle off its needle - point it is automatically Fixed to the lower part, this converting the instru- ment into a theodolite proper with the great advan- tage of reading by coincidence - micrometer.
Sole Agents:-
WILD
HEERBRUGG
DIETHELM & CO. LTD.,
SINGAPORE. KUALA LUMPUR. IPOH, PENANG
SINCE 1906
SLOAN Flush VALVES
AND NOW
AUTOMATICALLY SELF-CLEANING!
SLOAN Act: Matic
SHOWER HEAD
Sole Agents: INNISS & RIDDLE (CHINA) LTD.
67-69. DES VOEUX RD.. C.. HONGKONG
TEL: 28091
Howah Lamps
飾燈華巧
Imported and selected from over 30 well-known manufacturers in Europe & U.S.A., to suit every purpose for lighting and decoration.
DISPLAY AT:
HOWAH & CO., LTD.
26 DES VOEUX ROAD. C.. 3RD FLOOR.
(WING ON'S TOWN BRANCH BLDG.)
TELS. 33329 & 32010
HONG KONG.
THE HONG KONG & FAR EAST BUILDER -
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- VOLUME 15. NUMBER 6
61