FINE ROYAL GEOGRAPHICAL SOCIETY PLAIN THEODOLITE
Sold
EXCEPTIONAL 5 INCH HALF CIRCLE THEODOLITE SIGNED ON THE HORIZONTAL PLATE: TROUGHTON & SIMMS LONDON ALSO ON THE A FRAME: ROYAL GEOGRAPHICAL SOCIETY No1. 5" & ON THE 10" INCH TELESCOPE: RGS No1. 5". CENTRAL SILVERED COMPASS, 360 DEGREE HORIZONTAL SILVER CIRCLE DIVIDED IN 30 MINUTE DIVISIONS, VERNIER READING TO 1 MINUTE OF ARC, HALF CIRCLE SILVER SCALE 90-0-50 DEGREES, REVERSE 30-0-30 DIFF OF HYPO & BASE. SPIDER'S WEB CROSS HAIRS INTACT. ERECTING LONG EYE-PIECE, SHORT INVERTING EYE-PIECE & ANGLE EYE-PIECE, PLUMB BOB & SMALL SCREWDRIVER. PLUS TWO MYSTERY TUBES? BOX 11" x 8.3/4" x 6" INCHES
Circa
1870
Country of manufacture
UK and Ireland
Description
RE. MYSTERY TUBES, BOTH HAVE MALE & FEMALE THREADS, ON REMOVING THE O.G. CELL THESE TUBES WILL SCREW INTO THE THEODOLITE TELESCOPE ALSO THE O.G. WILL SCREW INTO EITHER TUBE. NOT SURE THE PURPOSE OF THIS AS THE FOCAL LENGTH WOULD MAKE THIS POINTLESS, BOTH TUBES HAVE THERE PLACE IN THE BOX AND ARE OF THE SAME COLOUR & FINISH AS THE THEODOLITE.
SHIPPING BY UPS, FEDEX, ETC. Contact Email: [email protected]
Ask the Dealer
Dealer information
MikeRead
Mike Read Antique Sciences
Based in Lelant, near St Ives, Cornwall, I have been trading since 1979, buying and selling scientific instruments and nautical antiques. Over the years I have acquired many rare and wonderful items for the trade and collectors alike. I hope this continues. Mike Read. Email: [email protected]
Other items See all
-
ANTIQUE MAHOGANY QUADRANT £490 GBP -
-
MINING DIAL BY CHADBURN BRO’s £440 GBP -
