8687.1 - Metal ruler that has an eyelet to enable it to bend, measuring in inches on both sides.- 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23. - J Rabone & sons BIRMINGHAM - No 1493

Foresters usually measure the diameter of trees at Breast Height – traditionally 4 foot, 6 inches – now 1.3 m – which is termed Diameter Breast Height Over Bark (DBHOB). Basal Area is the cross section of the tree trunk at breast height, and the sum for the stand or group of trees is expressed square feet per acre (after 1973 it was expressed in square metres per hectare). Lots of skinny trees, or a few fat ones, can have the same Basal Area, but when combined with the number of stems, Basal Area is a good indicator of stand density. Two common methods are used to measure of Basal Area – fixed area plots and angle count sampling. 1. Fixed area plots require setting out a small area, commonly 50 m x 20 m, and measuring all the trees at breast height, and doing some quick sums. 2. Angle count sampling involves a simple sweep of the forest from a fixed sampling point using a relascope, dendrometer sight, angle gauge, or glass wedge prism. This wooden builders ruler has been shaped at one end to create a shallow angle (usually less than 3 degrees). Standing in one spot, a sweep is made with the wedge held to the eye, and trees are counted as either “in” or “out”. The number of trees is multiplied by conversion factor of the wedge (10 in this case) to estimate basal area. It’s very quick and effective.Basal Area Angle Gauge The two ends fold up and one end (on the right) has been reduced in width to create a shallow angle for the viewer Home made by cutting down a wooden builder's ruler Many forestry students made their own Basal Area Angle Gauges and its thought this may be oneforest measurement

Children used wooden rulers, before plastic rulers were manufactured, during their lessons. Sometimes they were given away in 'showbags' at Agricultural Shows. This is why some have advertising on them.A piece of wood measuring 12 inches (imperial) or 30 cms, marked on both side for use in different measuring activities at school.ruler, school, education, george evans collection

The book was published in the UK. This book was purchased with the help of Mrs E. C. Baker, c/o John Pook and Co, 68 Fenchurch St, London EC3 - from The Needlewoman Shop, Specialists in Needlework, 146 Regent Street London W.1. Then posted to Mrs G R (Joan) Horridge at ICI in Hong Kong. Book was owned and used by Joan Francis Horridge.Paper booklet bound with two rusted metal staples on spine. Cover is in colour and depicts a woman knitting. Prominent colours are black, green, blue and cream. Inside covers contains pages which are smaller than the covers. Pages contain printed black text detailing various knitting patterns and knitting information. Back cover has a ruler graphic for measuring.knitting, pattern, joan francis horridge, the needlewoman shop, london, honk kong, g r (joan) horridge, mrs e. c. baker, penelope

Dress length measure used for dressmaking Wooden ruler standing vertically on metal stand; metal adjuster fastened with a butterfly clipEasyhemdomestic items, sewing

From the Betty McPhee ruler collectionWooden ruler used as a promotional ruler. Inscribed with rules of Police Traffic School. Measures in inches to one foot and in fours and eights to one foot.Bank of New South Savings Bankschool, equipment, domestic items, writing equipment

Red and white rulers commemorating Box Hill - Doncaster Electric Tramway Exhibition 1889 - 1989. Mounted on cardboardinstruments, measuring, civic mementoes, souvenirs

Believed to be 70 years old.Flat grey box containing four set squares in the lid, one compass, one ruler, two pieces of cork (not numbered), two pencils (not numbered), and an eraser (not numbered).The School Set of Mathematical Instrumentsinstruments, measuring

Came from Giselda Bannister's mother's (Estelle Bannister) home.Wooden ruler with stand used to dressmaking to measure hems.Ruler marked with 1-29 inch markings.dressmaking, ruler

Wooden 12 inch / 30cm school rulers with increments in inches and centimetres both sidesBank of ES & A / Commercial Savings Bank of Australia Limited / Drink a Pint of Milk a Day / Standard school Ruleeducation, school, measuring, ruler

30 cm tactile yellow ruler with black marking every 5 centimeters with raised markings, has two different edges - straight and notched. The straight edge can be used for measuring and drawing, and the notched edge designed to help place pins when creating charts and graphs or using a compass. There are non-slip pads on the back of the ruler. 1 yellow ruler with black large print numbers and black measurement indicatorsRNIB LT21 (on back)assistive devices, royal national institute for the blind

A wooden ruler with raised metal dots marking the spacings on the ruler. Made prior to 1971, when metric measurements were introduced, this 18-inch ruler is a demonstration of how easily a simple visual measuring tool could be adapted for varying degrees of sight by the use of tactile markings. 1 wooden ruler with metal pins as measurement pointsassistive devices, royal national institute for the blind

From Athol Ferguson - great grandson of Henry William Paul (1838-1911).Cylindrical ebony ruler - 12 inch, Concentric grooves on each end.rulers, measures

Used by Nancy Adeney when teaching school 1950's.Three feet long wooden blackboard ruler with black divisions and numbers - has a wooden handle.measuring instruments, school equipment