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About this product
Product Identifiers
BrandDavis
GTIN0011698001101
UPC0011698001101
eBay Product ID (ePID)1737928909
Product Key Features
California Prop 65 WarningWww.P65warnings.CA.Gov
Dimensions
Weight0.45lbs.
VolumeNa
Height3.00
Width9.00
Length10.00
Ratings and reviews
Most relevant reviews
- 17 May, 2017
Lifeboat Sextant
I've had the opportunity to compare sights of the Mark 3 with the sights of a Mark 25 and the older Mark 12. The Mark 3 compares very favorably. The Mark 3 is a vernier scale s extant. It's arc is divided into whole degrees. The vernier scale provides minutes. If you study the use of vernier scales, you can approximate seconds readings. A second of arc measures 1/10th nautical mile so your error won't be catastrophic. I'm a writer, historical/nautical fiction. When I give presentations, I talk about seamanship and navigation in the late 19th Century. Having the three Davis sextants allows me to show the differences between a modern micrometer drum sextants and the vernier sextants of the era I write about. My audience can actually pick up these sextants. I will not use my Astra IIIB for presentations! I think the Mark 3 is an excellent emergency sextant considering how extensively navigation is accomplished via GPS. I do recommend people read "How To Use Plastic Sextants" by David Burch, however, to fully appreciate the capabilities and limitations of plastic sextants. The Mark 3 is designed to help you make landfall in an emergency.Verified purchase: YesCondition: Pre-owned
- 21 Jan, 2020
Great Instrument for the Money
Sextant is very well made with an instruction manual which is a great introductory learning toolVerified purchase: YesCondition: New
- 10 Jan, 2018
Mk3
Good as a backup or practicing sextantVerified purchase: YesCondition: New
