Does your pen measure up? This precision chrome German caliper pen does. It's a working retractable ballpoint pen with built-in 4 in. caliper, thread scale and tire tread gauge. (Don't forget to add 4mm to measurement to account for design as per instructions.) Refillable Parker-style ballpoint or gel pen cartridge refill. Perfect Christmas birthday graduation fathers day gift pens boyfriend husband groomsmen groomsman guy man men dad grandpa for engineers, contractors and architects gifts.
