#Military protractor scale pdf
#Military protractor scale serial

suicient space is leit for dispositionV of coordinate rules.

More tlianone scale can be placed onV the ordinaryprotractor, but notdirect reading.

direct reading is meant, reading the angle by means of-a scale, the division pointsofwhich can be ⁇ marked with a pencil or Ya pointer.

Vof angular measurement thatcan be usedjv ordinary protraetor can only have one scale directly for reading and plotting the scale of angular measurement on a protractor.

This placing of theI mils lof angular measurement f around an arrangefY i ment of slots permits placing of more than one direct readingqand sliding the Yscale of angular measurement on a protractor.

i horizontal slot is used, from 1.5() degrees to v180 vdegrees the vleft hand slot is usedy for measuring and plotting angles in degrees.

#Military protractor scale serial

the lpresent application is a substitute' for an application identilied ⁇ by Serial No.This invention relates yto an improved measuring instrument, and it has morepan ⁇ ticular reference ⁇ to a military protractor for use in military science in 'reading maps, lay- 5 ing out and measuring angles, and laying oft angles forthe degree and mil system of circular measurements.”.G01B3/56- Gauges for measuring angles or tapers, e.g.G01B3/00- Measuring instruments characterised by the use of mechanical techniques.G01B- MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS.G01C- MEASURING DISTANCES, LEVELS OR BEARINGS SURVEYING NAVIGATION GYROSCOPIC INSTRUMENTS PHOTOGRAMMETRY OR VIDEOGRAMMETRY.Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Individual filed Critical Individual Priority to US216184A priority Critical patent/US1660624A/en Application granted granted Critical Publication of US1660624A publication Critical patent/US1660624A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Original Assignee Individual Priority date (The priority date is an assumption and is not a legal conclusion.

Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US216184A Inventor Harry A Musham Current Assignee (The listed assignees may be inaccurate.

#Military protractor scale pdf

Google Patents US1660624A - Military protractorĭownload PDF Info Publication number US1660624A US1660624A US216184A US21618427A US1660624A US 1660624 A US1660624 A US 1660624A US 216184 A US216184 A US 216184A US 21618427 A US21618427 A US 21618427A US 1660624 A US1660624 A US 1660624A Authority US United States Prior art keywords slot slots protractor scale military Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.