# Least Count

What is mean by least count? Tell the least count of dumpy level and theodolite?

#### Raj Gohil

• Jul 14th, 2011

The minimum accurate value that an instrument can measure. For Dumpy level, it is 1 degree and for theodolite it is 30'

#### ANKIT JAIN

• Feb 28th, 2012

The least count of theodolite is 20.

#### K.Rajesh.

• Mar 2nd, 2012

least count is 20

#### prakashchauhan

• Mar 14th, 2012

the least count of theodolite is 20

#### chandrababu

• Mar 19th, 2012

0.001

#### vipin

• Apr 8th, 2012

its 0.005m

#### ramq

• Apr 9th, 2012

The above answers are highly incorrect because the ans must have units in seconds...........

#### humayun

• May 8th, 2012

Least count of theodilite is 2" & dumpy level is .005mtr.

#### kumail holawala

• May 16th, 2012

d least count of theodolite is 20 sec

#### Ravichandra N.

• Aug 5th, 2012

The minimum reading we read from any instrument is known as Least Count of that instrument.For theodolite, the L.C. is 20secs and for Dumpy Level(Reading of Leveling Staff) is 0.005m(5mm).

• May 30th, 2014

least count is the minimum reading you can read from an instrument. for dumpy level is 5mm and theodolit is 20s

#### Biplab Kisan

• Jun 2nd, 2014

Least count is defined as the highest degree of accuracy of measurement in the instrument or the smallest reading that can be measured by the instrument...So for theodolite it is 20" and for dumpy level it is 5mm.

#### Mohit sharma

• Aug 1st, 2014

For Theodolite 20" & auto level 5mm

• Sep 11th, 2014

For theodolite it is 20 and the dumpy level that is 5mm.

#### Sri ram

• Dec 22nd, 2014

Min Measurement that can measured using that instrument

#### mahesh

• Feb 13th, 2015

Theodolite is 20" and auto level is 5mm .

#### ilyas.p

• Mar 3rd, 2015

least count is the smallest measurement which can measure by that instrument for dumpy level is 0.5cm

#### Surendra Mittal

• Mar 5th, 2015

Least count is the minimum measurement that can be measure with help of any instrument....Least count of theodolite is 20 second...

#### SHUBHAM KALE

• Jun 30th, 2015

Least count is the minimum measurement that can be measured by an instrument
For THEODOLITE - 20"
DUMPY LEVEL - 5 mm

#### vijay

• Oct 5th, 2016

5mm

#### jibanjyoti routray

• Nov 12th, 2017

Least count of auto level is 0.5mm and dumping level is 0.5mm

#### Dhanavath kirankumar

• Jan 8th, 2018

The smallest measurement which can be measured by an instrument is known as least count. The least count of dumpy level depends on the readings on staff. Generally we use 5 mm least count staff, so the least count of the dumpy level is 5mm. The least count of theodolite is 20(20 seconds). It can be observed in vernier scale of theodolite instrument.