MINING THEODOLITE OR DAVIS DIAL
£580 GBP
GOOD COMPLETE EXAMPLE OF JOHN DAVIS'S IMPROVEMENT OF THE HEDLEY DIAL WITH 4.1/2" SILVERED DIAL WITH INTERNAL SPIRIT LEVELS, EXTERNAL VERNIER READING TO 3 MINUTES OF ARC. EAST & WEST TRANSPOSED. CAN BE USED AS A MINING DIAL OR ADD THE 'Y' MOUNTS & TELESCOPE TO THEODOLITE MODE. SIGNED: JOHN DAVIS & SON. DERBY. MOUNTED ON A 4 SCREW HOFFMAN MOUNT. ORIGINAL BOX 13.1/2" x 9.1/2" x 7" INCHES.
Circa
1870
Country of manufacture
UK and Ireland
Description
SHIPPING BY FEDEX, UPS, DHL, ETC. FULLY TRACKED. Contact Email: [email protected]
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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]