包装

 Hangzhou Jinnan Tools & Measure Co.,Ltd which established in 1996,located in Hangzhou High & New Tech Development Zone, With an area of 20,000 sqm ,15,000 sqm with buildings.We mainly specialized in researching,producing and marketing varieties of professional drawing tools and also measuring tool in stationary,industry,and construction.

Powerful development forces and rich experiences in the industry help us to design all kinds of special measuring instruments for customers according to their requirement as well .We have many high accuracy manu facturing equipments and professional operation staff,We have strict Control from raw material to finished products.

We built a new production line in 2012,mainly produce Wide base square.knife edge square and steel marking gage.

We have been pursuing firsr-rate quality and after sale service all the way,We always focusing on the cooporation between the famous brand in the world. 

Plastic adjustable set square

1. Material: Plastic

2. Size: 25cm or 30cm
3.Usage: engineering and technical drawing
4. Whole inspection

5.it is good for you to use with drawstriing board

A set square or triangle is an object used in engineering and technical drawing, with the aim of providing astraightedge at a right angle or other particular planar angle to a baseline.

The most simple form of set square is a triangular piece of transparent plastic (or formerly of polished wood) with the centre removed. More commonly the set square bears the markings of a ruler and a half circle protractor. The outer edges are typically bevelled. These set squares come in two usual forms, both right triangles: one with 90-45-45 degree angles, the other with 30-60-90 degree angles. Combining the two forms by placing the hypotenuses together will also yield 15° and 75° angles. They are often purchased in packs withprotractors and compasses.

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