I needed some proto cards, so I had my board house make enough for everyone. Specifications The Proto Card is a double sided FR-4 epoxy glass printed circuit board with plated thru holes and gold plated edge contacts. The dimensions of the board are 2-3/4" x 7". Consisting of a 3 hole solder pad on .100" centers with 5 volt and ground buses. The layout pattern will accept standard IC widths of .300" and .600". The Hole size of .042" will accept all low to medium power components and also accommodates circuit board accessories such as push-in Wire wrap sockets, pins and terminals. There is also a 4 x 25 pad only array for mounting connectors or additional components. The card accepts up to 24 16 pin logic ICs. The Mechanical Drawing can be viewed here. http://www.mindspring.com/~adrift/pcb1.jpg a new web site, "Designing Hardware for the Apple II" located at www.easternmicro/apple should be available soon. The cards are $24.50 each. U.S. Priority Mail with delivery confirmation is $4.35 International shipping rates can be found here. http://ircalc.usps.gov/ South Carolina residents add 6% Sales Tax. I accept credit cards and checks through Billpoint or Money orders in US funds. To place an order or for additional information email me at adrift@mindspring.com Kevin