The Sightmark Wraith 4-32x50mm Digital Riflescope uses a 1920× ... While many of the best thermal rifle scopes cost thousands of dollars, there are a few good ones to be had on more of a budget.

Use your digital camera and a spotting scope to capture up-close images of faraway subjects — without breaking the bank.

From the DC offset and trigger settings to the sweep time controls, the DL 901 is equipped to handle slow, high-resolution analog-to-digital conversion. The circuitry includes TTL chips and a PMI ...

The result is two independent traces on the analog scope, like magic. More after the break… If you’re wondering how this would work on a modern digital scope, so was [Lockdown Electronics].