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Rabone No 1207 six inch Rope Gauge made of boxwood and brass. UK Government 910/5193. Calliper measures diameter and also has a circumference scale so that that can be read directly.  The table on the front is for breaking loads in tons for galvanised hawser steel ropes from one inch to five inch circumference. The table on the back is for weight and breaking load of 3 strand BSS  grade 2 manila and sisal rope from one to ten inch circumference.
Rabone No 1206 four inch rope gauge. No tables. Promotional for Bridge Brand Steel Wire Ropes made by Bridgwater-Terrell Ropes Ltd, Bristol Road, Bridgwater, Somerset.
The ‘Cooper’ Cotton Driving Rope, Scar Top Ropery, Burnley, Lancs. Gauge  made by John Rabone & Sons, Birmingham. The caliper slide has a circumference scale on the upper side and a diameter one on the underside. There is a table giving HP per rope against diameter under which it states: ‘The above are highest powers advisable at most efficient speed 4000 to 5000 ft per min with smallest pulley not less than 32 times diameter of rope.’
Calliper gauge made for Wright’s Ropes Ltd of Birmingham by I & D Smallwood. The slide is graduated for both diameter and circumference, in inches on the upper side, and metric on the under side. The scale length is 4 inches. Wright’s made or sold both steel and fibre ropes and were founded in 1770. This gauge is probably early 20th century. It is made of brass (lacquered originally) and boxwood.
Two 4” and one 6” rope gauges. The left hand 4” one in both pictures is signed Edward Preston & Sons and the right hand one is by John Rabone & Sons. The 6” gauge is signed I & D Smallwood Ltd. All were Birmingham makers, and all have the same tables on them. In each case the slide has both circumference and diameter scales, both on the upper side on the 6” rule and one scale on each side of the slide for the 4” rules. The tables on the front side are: weight per fathom v circumference for wire rope, weight per fathom v size for hemp rope (units inches and pounds); chain (size) v weight per fathom & equivalent to hemp rope (inches, pounds, inches).
The tables on the back are: For shroud laid 120 fathom coils and hawser laid 90 fathom coils, tarred hemp and manilla ropes, weight in hundredweights, quarters and pounds v circumference.

A fathom was six feet, a hundredweight (cwt) was 112 pounds (lbs) and a quarter (qtr) was 28 pounds.
Rabone No 1460 four inch calliper rule made of boxwood and brass. Metric and inch scales.
Philip Harris & Co Limd Birmingham tape and leather strap gauge. It is actually a vernier calliper.
A three inch calliper rule by J Rabone & Sons made for W S White & Sons Ltd, Textile Machinists, Colne. On the reverse it says “Looms, Dobbies, Springs, Forks & Temples”.
Boxwood and brass 12” four fold caliper rule, probably made by Upson Nut & Standard Rule, Unionville, Ct, USA.
Two foot folding tailor’s square in wood and brass. It is signed ‘Roberts, Maker, Sheffield’. Three Roberts are known rule makers in Sheffield, viz: William Roberts (fl.1822-48), Richard Roberts (fl.1852), and Henry Roberts (fl.1868).
A boxwood & brass hatter’s rule for measuring the size of hats. The five inch long rule has an extending slide to measure the inside length and width. The table on the reverse then gives the hat size. Date and maker unknown but English and probably early 20th century or possibly late 19th.
Shoe stick signed ‘T Temporal’, made of boxwood and brass.
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J Rabone & Sons tailor’s diagram square with a sixth scale (inches) on the upper face and an inches & eighths scale on the lower face. Probably used for drawing sketches in the tailor’s work book.