Dimension measuring instrument
First Claim
1. A dimension measuring instrument comprising:
- an encoder for converting a displacement of a spindle into an electric signal;
an analogue indication device for electrically indicating a measured value obtained through processing of an output from said encoder, said analogue indication device electrically indicating the measured value by a pattern including at least one scale and a pointer;
a scale indicating circuit included in said analogue indication device, said scale indicating circuit indicating at least one scale having different scale intervals in one scale row; and
a pointer indicating circuit included in said analogue indication device, said pointer indicating circuit driving said pointer in accordance with said measured value and depending on the scale intervals for the indication;
whereby a range of dimension indication is expanded without deteriorating the reading accuracy within a predetermined range of dimension indication.
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Accused Products
Abstract
This invention concerns a dimension measuring instrument comprising an encoder for converting a displacement of a spindle into an electric signal and an analogue indication device for electrically indicating a measured value, which has been obtained through processing of an output from the encoder, by a pattern including a scale or scales, a pointer and the like. The analogue indication device is provided with a scale indicating circuit for continuously indicating two or more scales different in scale interval from each other and a pointer indicating circuit for driving the pointer in accordance with the measured value and depending on the scale interval for the indication, and a range of dimension indication is expanded without deteriorating the reading accuracy within a predetermined range of dimension indication.
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Citations
9 Claims
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1. A dimension measuring instrument comprising:
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an encoder for converting a displacement of a spindle into an electric signal; an analogue indication device for electrically indicating a measured value obtained through processing of an output from said encoder, said analogue indication device electrically indicating the measured value by a pattern including at least one scale and a pointer; a scale indicating circuit included in said analogue indication device, said scale indicating circuit indicating at least one scale having different scale intervals in one scale row; and a pointer indicating circuit included in said analogue indication device, said pointer indicating circuit driving said pointer in accordance with said measured value and depending on the scale intervals for the indication; whereby a range of dimension indication is expanded without deteriorating the reading accuracy within a predetermined range of dimension indication. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A dimension measuring instrument comprising:
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an encoder for converting a displacement of a spindle into an electric signal; an analogue indication device for electrically indicating a measured value obtained through processing of an output from said encoder, said analogue indication device electrically indicating the measured value by a pattern including at least one scale and a pointer; a digital indication device for digitally indicating said measured value; a scale indicating circuit included in said analogue indication device, said scale indicating circuit indicating at least one scale having different scale intervals in one scale row; and a pointer indicating circuit included in said analogue indication device, said pointer indicating circuit driving said pointer in accordance with said measured value and depending on the scale intervals for the indication; whereby a range of dimension indication of said analogue indication device is expanded without deteriorating the reading accuracy within a predetermined range of dimension indication.
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Specification