JPH0395902U - - Google Patents

Info

Publication number

JPH0395902U

JPH0395902U JP499690U JP499690U JPH0395902U JP H0395902 U JPH0395902 U JP H0395902U JP 499690 U JP499690 U JP 499690U JP 499690 U JP499690 U JP 499690U JP H0395902 U JPH0395902 U JP H0395902U

Authority

JP

Japan

Prior art keywords

scale

triangular

ruler

superimposed

transparent board

Prior art date

1990-01-23

Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Pending

Links

• Espacenet
• Global Dossier
• Discuss

• 238000005259 measurement Methods 0.000 claims description 3
• 229920003002 synthetic resin Polymers 0.000 claims 1
• 239000000057 synthetic resin Substances 0.000 claims 1
• 238000010586 diagram Methods 0.000 description 1
• 238000003780 insertion Methods 0.000 description 1
• 230000037431 insertion Effects 0.000 description 1

Cited By (1)