This instrument is a reproduction based on two Gunter type quadrants (E. Gunter, 1581-1626), made in the mid-18th century. Both originals, by unknown English authors, are in the National Maritime Museum in Greenwich, London.
On the one hand, the instrument has a local altitude quadrant with a system of pinulas to take the altitude of the sun, complemented by the inclusion of a thread with a plumb line and a sliding bead. It contains a series of scales, some of them based on the stereographic projection, which allow to find the time easily and to solve many problems related to the position of the sun.
On its back there is a nocturnal whose purpose was to provide orientation for ancient navigators who, by memorising the position of the brightest circumpolar stars, could help them in their night-time observations.
Maximum Height: 17cm / Width: 15cm / Thickness: 0,7cm
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IN STORE PICKUP
For our local customers, we are pleased to offer an In Store Pickup option! How it works:
Shop online at shop.pem.org
At checkout, select Curbside Pickup as your shipping method. Place your order.
Once we have prepared your order, you will receive an email that your order is ready for pickup.
Follow the pickup instructions provided in your email. Arrive at our Store location at 161 Essex Street.
- Orders not picked up within two weeks of order date will be canceled and refunded.
Please Note: Please allow 2-3 days from purchase date for processing. In Store Pickup is available Thursday through Monday 10 am–5 pm.
RETURN & EXCHANGE POLICY
We are pleased to accept returns within 30 days of the purchase date. All returned items must be in their original condition and packaging.
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Please note: Sale, clearance and personal use items, such as face masks, cannot be returned or exchanged for store credit.