50 year calendar


50 year calendar
50 Years Perpetual Calendar Keychain Keyring Silver Alloy Keyring Keyfob Ring Fashion Accessory.
eychain Material: Zinc Alloy Total Length: Approx.7.3cm Diameter: Approx.3.2cm Color: Silver Instruction: Turn the upper small disc, find the objective year and month and align the year and month, then you can see the date of the week at the diagonal direction on the dial.
Brass Sextant with Compass - J SCOTT LONDON -1753 with Hardwood Box
A sextant is a doubly reflecting navigation instrument that measures the angular distance between two visible objects.
The primary use of a sextant is to measure the angle between an astronomical object and the horizon for the purposes of celestial navigation.
Making this measurement is known as sighting the object, shooting the object, or taking a sight.
The angle, and the time when it was measured, can be used to calculate a position line on a nautical or aeronautical chart.
A common use of the sextant is to sight the sun at noon to find one's latitude.
This is a replica of Original Sextant, all parts are moving, can be used for basic observation or suitable for collectors
Item is antiquated not an antique
Sextant measurements: 13cm(L) x 12cm (W) x 7cm( H)
Weight : 475 gr
Size of Box : 15cm (L) x 14cm( W) x 8cm (H)
Gross weight: 970
Fun Fact: Jim Lovell demonstrated on Apollo 8 that sextant navigation could return a space vehicle home. A tool that has helped guide sailors across oceans for centuries is now being tested aboard the International Space Station as a potential emergency navigation tool for guiding future spacecraft across the cosmos
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