Geometrical instruments – Distance measuring – Of length by rolling contact
Patent
1990-08-07
1991-11-26
Will, Thomas B.
Geometrical instruments
Distance measuring
Of length by rolling contact
33780, 33781, G01B 312
Patent
active
050672495
ABSTRACT:
An instrument for measuring and converting scale dimensions such as, for example, mileage values on a map, includes a housing having a tracing wheel at one end for rolling along route lines on the map. The tracing wheel is connected to operate an actuator that causes a digital display to visually indicate a value representative of the degrees of rotation of the tracing wheel, and thus of the mileage between two points on a map. A scale adjusting device is connected with the actuator to adjust the actuator to obtain an accurate mileage indication for different scale maps.
REFERENCES:
patent: 49011 (1865-07-01), Tiffany
patent: 319911 (1885-06-01), Knapp
patent: 997648 (1911-07-01), Cavanagh
patent: 1405417 (1922-02-01), Jansson
patent: 1718052 (1927-04-01), Lineaweaver
patent: 2110757 (1938-03-01), Clarke
patent: 2294566 (1942-09-01), Malm et al.
patent: 2557450 (1951-06-01), Mentzel
patent: 2579956 (1951-12-01), Owen
patent: 2614330 (1952-10-01), Cederholm
patent: 2817906 (1957-12-01), Hall
patent: 2865103 (1958-12-01), Lolley et al.
patent: 3012328 (1961-12-01), Henson et al.
patent: 3121956 (1964-02-01), Philbin
patent: 3494039 (1970-02-01), Porter
patent: 3497959 (1970-03-01), Engelsman
patent: 3791038 (1974-02-01), Polydoris et al.
patent: 3918163 (1975-11-01), Keating
patent: 4215480 (1980-08-01), Fisher
patent: 4253239 (1981-03-01), Houck
patent: 4275264 (1981-06-01), Houck
patent: 4377850 (1983-03-01), Simpson
patent: 4383301 (1983-05-01), Morita
patent: 4472881 (1984-09-01), Houck
patent: 4700484 (1987-10-01), Frank
patent: 4760647 (1988-08-01), Gillis
LandOfFree
Map scaling instrument does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Map scaling instrument, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Map scaling instrument will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2380951