Easy to use reliable slide rules for chemical plating made in Japan

One piece of slide rule is available for eight -type of metal plating. 

Data related to electrolytic and chemical plating can be calculted.

Easy to use at manufacturing or processing site. 

Electrolytic Plating (Scale in the upper part)

1) Align cursor's current efficiency % with the chemical symbol scale of metal (to be plated)

2) Move the central strip to aligh the cursor's 100% line with the current density.

3) Figure of plating thickness and time can be read.

Calculation of current efficiency of electrolytic plating is also possible  (presented from cursor).   

Electroless Plating (Scale in lower part)

1) Align the cursor's 100% line with chemical symbol scale of metal (to be plated)

2) Move the central strip to aligh the diamond mark with the same 100% line

3) Figure of desposition weight and plated film thickness can be read.

 Other related products: Duct Slide Rule (used for duct piping and air conditioner installation)  

Other realted product: Weight Balance Calculator (used for health check, health management)   

Other Related Products: Cardio-thoracic ratio scale (used for measuring and calculation of CTR from chest X-ray photo)

1958   Slide Rule context was held.

Hemmi slide rules were used for the design of Tokyo Tower

Track record for production and sales of special slide rules
•Business management-related calculation (management diagnostics, profit margins, etc.)
•Pollution-related calculation (diffusion of stack gas, etc.)
•Medical-related calculation

(cardio-thoracic ratio, pulmonary ventilation capability, instillation speed, etc.)
•Health-related calculations (degree of obesity check, calorie calculation, etc.)
•Aircraft-related calculation (load balance, etc.)
•Architectural design-related calculation (architectural structure designs, etc.)
•Calculation for duct piping, fluid design-related calculations (air conditioning design, pipe diameters, etc.)

Strength of Hemmi's Slide Rule

Over 80 years, we have accumulated know-how and proficiency in design and development of slide rules.
Easy to compute approximate values of complex technical calculation, repeated calculation or calculation performed at high frequency. 
If you have an idea for an equation, we will look into the possibility of making a slide rule for it.

Company Profile

ISO Certificate

2000   Acquired ISO 9001 certification
2005   Acquired ISO 14001 certification

Company History

Operating Business

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It’s our honor to have chance to assist you and

we expect to broaden cooperation with more trusted partners.