Vintage LUTZ Surveyors Topographic Abney Level Clinometer w/ Case And Pin HM527

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Seller: Top-Rated Seller badger1528 ✉️ (3,946) 99.4%, Location: Spokane, Washington, US, Ships to: US & many other countries, Item: 266718257493 Vintage LUTZ Surveyors Topographic Abney Level Clinometer w/ Case And Pin HM527. Vintage LUTZ Surveyors Topographic Abney Level Clinometer w/ Case And Pin The brand LUTZ is well-known for its high-quality surveying instruments. This antique original Abney level clinometer was manufactured in the United States An Abney level and clinometer is an instrument used in surveying which consists of a fixed sighting tube, a movable spirit level that is connected to a pointing arm, and a protractor scale. An internal mirror allows the user to see the bubble in the level while sighting a distant target. It can be used as a hand-held instrument or mounted on a Jacob's staff for more precise measurement, and it is small enough to carry in a coat pocket.[1][2] The Abney level is an easy to use, relatively inexpensive, and, when used correctly, an accurate surveying tool. Abney levels typically include scales graduated in measure degrees of arc, percent grade, and in topographic Abney levels, grade in feet per surveyor's chain, and chainage correction. The latter is the cosine of the angle, used to convert distances measured along the slope to horizontal distances. By using trigonometry the user of an Abney level can determine height, volume, and grade.[3] Abney levels are made with square tubular bodies so that they may also be used to directly measure the slopes of plane surfaces by simply placing the body of the level on the surface, adjusting the level, and then reading the angle off of the scale. Origins The Abney level was invented by Sir William de Wiveleslie Abney (24 July 1843 – 3 December 1920) who was an English astronomer and chemist best known for his pioneering of color photography and color vision. Abney invented this instrument under the employment of the School of Military Engineering in Chatham, England, prior to late 1870. It is described by W. & L. E. Gurley as an English modification of the Locke hand level.[1] Elliott Brothers of London registered an "improved clinometer and spirit level combined" in December 1870 based on "the old form as originally designed by Lieutenant Abney."[4] By 1871, a committee of the Royal Geographical Society recommended a long list of instruments that explorers should carry. Along with necessary tools such as a watch, compass, sextant and plenty of paper, the committee included "a pocket level (Abney's)" in a secondary list of "additional instruments, not necessary, but convenient." Global Shipping Program If you are purchasing multiple items that will total over 70 lbs. you will need to separate out the transactions as we cannot separate shipments that go through the eBay Global Shipping Program. If multiple items are purchased at one time and the package is over the weight limit, we will contact you to cancel the order and refund your purchase.   Free Returns We have free returns on domestic shipments for 30 days! Please contact us if there are any issues with your purchase.   Combined Shipping (domestic) If you buy more than one item with us, you may qualify for a combined shipping discount. If your purchase qualifies, you will be refunded the amount saved for combining shipments.
  • Condition: Used
  • Condition: Circa 1930's-1940's. It is complete and in excellent condition
  • Country/Region of Manufacture: United States

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