CN2153769Y - Rangefinder for map - Google Patents

Abstract

The utility model discloses a rangefinder for a map which rolls on the line of the map, drives the mileage metering pointer through the rotation of each gear, and directly and exactly gets mileage number on an odometer. The utility model is characterized in that the lower half of a driving wheel 1 protrudes out of a housing, both ends of the pointer wheel shaft extend out of the housing, wherein, one end is respectively sheathed with a reed 10 and a handle head 9, the other end is sheathed with a pointer 7, a mileometer 8 is connected with the housing, and the mileometer 8 is engraved with mileage dial gauges with a plurality of proportions.

Description

Rangefinder for map

The utility model belongs to the linear measure longimetry field, is a kind of map stadimeter specifically.

Existing geographic survey mileage must be through repeatedly bending and line measurement, calculating, addition and obtain milimeter number, such computing method, can not fully reach make things convenient for, save time, accurate, general purpose.

The purpose of this utility model then is the problem at above-mentioned existence, has designed a kind ofly to roll on the map circuit, by the rotation of each gear, drives the map stadimeter of having the records of distance by the log pointer and directly accurately drawing mileage number on mileometer.

The utility model technical solution:

A kind of map stadimeter of forming by driving wheel 1, engaged wheel 2, the wheel 3 of becoming a full member, back gear 4, third wheel 5, pointer wheel 6 intermeshing gear trains, it is characterized in that driving wheel 1 Lower Half gives prominence to outside housing, housing is stretched out at the two ends of pointer wheel shaft, wherein an end is with reed 10, button 9 respectively, the other end is with pointer 7, meter 8 links to each other with housing, is carved with the mileage graduation apparatus of some ratios on it.

Advantage of the present utility model:

The map stadimeter adopts gear train, and structure is rationally novel, draws mileage number with the method for directly rolling on meter, thus reach more fully make things convenient for, save time, accurate, general purpose.

Fig. 1 is the utility model gear train synoptic diagram.

Fig. 2 is the side view of Fig. 1.

Fig. 3 is the utility model index dial synoptic diagram.

Below in conjunction with accompanying drawing the utility model is further described:

Each gear of map stadimeter is fixed on the clamping plate by axle, roll on map by driving wheel 1, thereby drive engaged wheel 2, become a full member wheel 3, back gear 4, third wheel 5, pointer wheel 6, the rotation of each gear (pressing map and map stadimeter 10:1 data ratio) drives pointer 7 and rolls, pointer 7 begins to rotate from 80 figure place of having the records of distance by the log, on map the terminal point that must measure arrive, be about to the map stadimeter and take liftoff figure.Ratio in scale graduation table on the map stadimeter, compare with the ratio on the map, thereby directly draw mileage number, as must again button 9 inwardly being pushed into shell, rotate from newly beginning measurement, pointer 7 is forwarded on the meter 80, unclamp, 10 of reeds push up back original position with pointer wheel 6 automatically, and can reuse the map stadimeter this moment.

Claims (1)

1, a kind of map stadimeter of forming by driving wheel 1, engaged wheel 2, the wheel 3 of becoming a full member, back gear 4, third wheel 5, pointer wheel 6 intermeshing gear trains, it is characterized in that driving wheel 1 Lower Half gives prominence to outside housing, housing is stretched out at the two ends of pointer wheel shaft, wherein an end is with reed 10, button 9 respectively, the other end is with pointer 7, meter 8 links to each other with housing, is carved with the mileage graduation apparatus of some ratios on it.

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