A ship is said to heel when it leans over to one side. A heeling instrument corrects an error on the ships magnetic compass caused by this lean or heel unless the compass had been stabilized and corrected with small magnets to prevent such errors. Instrument for measuring ships heeling error, in wooden boxNo. 0.408heeling, heeling error, compass, marine instruments

an instrument for drawing large circles or arcs, consisting of a horizontal beam along which two vertical legs slide. Also called a trammel.Beam compass used for marking out an arc or circle; 25cm beam with 2 x 24cm extensions, 3 pencil lead holders and one nib in original box [damaged].W. H. Harling Ltd. London.beam compass, trammel

8 cm compass Pattern 9628 in wooden boxCompass Patt 9628S Delicate instrument handle with care 287A/62compass, navigation

True North is at the centre of the north pole This is a fixed point at the top of the planet. The majority of our navigational charts are orientated so that they use true north as their reference point. This is because true north doesn’t move. Magnets don’t point towards true north however. They point toward magnetic north which is in a different geographical place. The difference in the angle between true north and magnetic north is call variation.Three wooden boxes containing magnetic compass quadrantal correctors, correcting magnets and shadow pins.Saura Keiki Seisakusho Co Ltdcompass, correcting magnets, magnetic variation

Seven boxed drafting sets containing compasses, pens and dividers. Padded lids, interiors lined with velvet, blue, black or green. .1) Belonged to Peter Fraser. .2) Belonged to Ian Hooper. .6) Belonged to Noel Cawthorn. .6 & .7) Embossed on lids "Eco O Bra / Kandidat". .1) "Koala / Series / Made in Australia".instruments, trades, drafting, containers

An aid for learning the points of the compass. A circular aluminium plate mounted on a wooden base and embossed with 16 raised lines radiating from the center. 16 small plates each brailled with a different compass direction are provided. The set is accompanied by an instruction sheet. 1 silver aluminium plate on a larger black wooden circle with 16 metal spikes around edge housed in a cardboard box and 16 rectangular aluminum plates.assistive devices, orientation and mobility

Oblong-shaped, yellow AGIO Wilde Cigarillos tin with a vertical cigar, a tobacco leaf and a compass on the lid.On lid: "AGIO Wilde Cigarillos, also, written in Spanish, a declaration and guarantee of the high quality of both the tobacco and its manufacture. Also on the lid are a compass, a vertical cigar and a tobacco leaf. All the above are also repeated inside the lid.boxes, smoking equipment

Sighting compass / surveyors compass used in conjunction with theodolite for accurate readings of angles between designated visible points in the horizontal and vertical planes.Brass surveyors cross with original box. Used in conjunction with theodolite to take compass readings. Architects' / N. H. SEWARD / Instrumentscity of greater bendigo surveying

A collection of folders and log book relating to A2-110 Aircraft(Box 2 of 4)royal air force - service manuals, helicopters -- booklets, manuals, iroquois helicopter, a2-110 aircraft