Surface specification symbols adhering to MIL STD .8C, 100-A and ANSI Y14.5

Sizes from 2" to 8" pipe diameter. Both light and heavy series. All with allowance for pencil point.

For pipe and plumbing layout - gas, oil, water or chemical. All with allowance for pencil point.

For delineation of laboratory recording instruments-manometers, relief valves, pressure gauges, indicators, signal lights, solenoids, etc. Developed by Instrument Section Design Division of DuPont Company's Engineering Department. All with allowance ...

Top and side view of seven popular sizes to make a total of 127 different combinations.

Different types and sizes of brackets, parentheses, root symbols, integrals, numbers, small Greek alphabet, and some of the capital Greek letters used in mathematical and chemical formulate. All with allowance for pencil point.

For socket head, shoulder screws and cap screws, plus American Standard hex head bolts and nuts. Also contains counter sink and drill points.

Symbols for Y's, T's. elbows and other connection devices.