Least count is the smallest value any instrument can read or measure. You may hear of vernier calliper of least count 0.02 mm, which means the minimum value vernier can measure is 0.02 mm.
You can’t measure a value less than 0.02 mm with this vernier calliper. The same thing applied to all other instruments, a usual scale of least count of 1 mm, can measure a minimum length of 1 mm only.
Vernier Caliper is a widely used linear measurement instrument with the least count of 0.02 mm. It is used to measure linear dimensions like length, diameter, depth.
Let’s discuss common Mechanical measuring instruments with their least count (Considering least count of commonly used instruments, you may find changes in special cases)
Vernier Depth gauge
Vernier Height Gauge
Electronic Height Gauge
0.001 or 0.0001 mm
5′ (5 second)
Digital Pressure gauge
0.001 bar or 0.0001 bar
0.1 nm (nanometre)
There is a lot more, please comment below if you are looking for the least count of any instrument.
Problems should be made visible in the Gemba. If an abnormality cannot be detected, nobody can manage the process. Thus the first principle of visual management is to spotlight problems.
When a hotel guest comes to the reception desk and asks for an aspirin or a list of good restaurants nearby, the hotel’s inability to fulfil those needs constitutes an abnormality.
By posting a list of the most frequent requests received from guests, the hotel’s management can gain an awareness of service deficiencies that need to be addressed.
Definition of Visual management
Making abnormalities visible to all employees—managers, supervisors, and workers—so that corrective action can begin at once.
If the first reason for visual management’s existence is to make problems visible, the second is to help both workers and supervisors stay in direct contact with the reality of the Gemba.
Visual management is a practical method for determining when everything is under control and for sending a warning the moment an abnormality arises.
When we take our customers on tours of Japanese factories, our hosts usually show us their display boards that allow everybody to see the production schedule and how the work is progressing. The formats are different for each plant.
Some use whiteboards, whereas others use paper; some use magnets, but the display boards are always clear and easy to understand, serving the purpose of helping people by allowing them to stay in touch with reality on the Gemba.
.It is important to never forget that visual tools have enormous power to drive improvement. This is why 5S, which sets standards and makes abnormality quickly visible, is always the first step and the last step in each kaizen journey